Two Canadians arrested and held without charge in Egypt for more than seven weeks have been ordered detained for another 45 days, a decision that comes amid heavy diplomatic pressure to free the two men.

The sister of Toronto filmmaker John Greyson said a prosecutor issued the extension for her brother and London, Ont., Dr. Tarek Loubani on Sunday.

"We were expecting some kind of decision to be brought down. Obviously we're very disappointed with this extension," Cecilia Greyson said.

In their first ever comments on their ordeal, Greyson and Loubani said in a statement released Saturday that they have been subjected to degrading conditions. They said they had left their Cairo hotel to observe an anti-government demonstration last month when Loubani heard calls for a doctor and began treating wounded demonstrators while Greyson began recording the bloody unrest on video.

The men were later arrested by police while heading back to their hotel. Their statement said they were beaten and dumped in a squalid, cockroach-infested jail cell crammed with others picked up that day.

Foreign Minister John Baird told Global TV on Sunday that he spoke with his Egyptian counterpart for an hour Friday night about the detained Canadians, but efforts are not progressing as hoped.

"We've had a favourable response at the political level but we haven't got the action that we want to see at this stage. We're going to keep focusing and keep working hard," Baird said Sunday morning before news of the extended detention.

Lynne Yelich, a junior minister responsible for consular affairs, said in a statement the government is "disappointed" Greyson and Loubani will stay in custody longer, adding consular officials continue to have access to them.

Cecilia Greyson said the men's legal team has launched a second appeal to free them, with a decision expected within days. She added they may be released before the 45 days are up, depending on the course of the investigation against them.

Sunday marked day 13 of a hunger strike the pair are staging to protest their detention. But Greyson's sister said they are being "careful" with their self-imposed starvation, and may reconsider it now that they face more time in prison.

"They're not interested in putting themselves in danger. The family members have really emphasized to both John and Tarek that if they start to go on too long they need to stop," she said, adding a doctor may check up on them this week.

She said their lawyers have told her the extension applies to the hundreds of people arrested and detained in the aftermath of the Cairo protest.

Egyptian prosecutors have accused Loubani and Greyson of "participating with members of the Muslim Brotherhood'' in an attack on a police station, but have not brought forward specific charges.

However, an Egypt foreign ministry spokesman has said there is a "solid basis... to charge them in the near future," according to a Toronto Star report.

The men's statement said they witnessed more than 50 people die in the unrest. They had planned an overnight stay in Cairo en route to Gaza, where Loubani was to do humanitarian work documented by Greyson.

But barred from getting across the border, they decided to investigate the protest erupting in Ramses Square mere blocks from their hotel.

The lengthy statement sketches a vivid portrait of what happened next, suggesting the pair are being detained for what they did and saw in the midst of the bloody clashes.

"(We saw) a young man carried by others from God-knows-where, bleeding from a bullet wound. Tarek snapped into doctor mode… and started to work doing emergency response, trying to save lives, while John did video documentation, shooting a record of the carnage that was unfolding."

Their nightmare started when they stopped for ice cream and then tried to go through a police roadblock, leading to their arrest and vicious beating, it said.

"Was it our Canadian passports, or the footage of Tarek performing CPR, or our ice cream wrappers that set them off? They screamed 'Canadian' as they kicked and hit us. John had a precisely etched bootprint bruise on his back for a week."

"We would welcome our day in a real court with the real evidence, because then this footage would provide us with our alibi and serve as a witness to the massacre," the statement added.

The unrest in Cairo was sparked after president Mohammed Morsi was removed from power, prompting his supporters to take to the streets.

Related on HuffPost:

Loading Slideshow...
  • A military attack helicopter flies over a street near the presidential palace, in Cairo, Egypt, Friday, July 5, 2013. (AP Photo/Hassan Ammar, File)

  • Supporters of Egypt's ousted President Mohammed Morsi hold up placards as they shout slogans during a demonstration where protesters have installed their camp, at Nasr City, Cairo, Egypt, Friday, July 19, 2013. (AP Photo/Hussein Malla)

  • Supporters of Egypt's ousted President Mohammed Morsi offer their Friday prayer where protesters have installed their camp and held their daily rally, at Nasr City, Cairo, Egypt, Friday, July 19, 2013. (AP Photo/Hussein Malla)

  • Supporters of Egypt's ousted President Mohammed Morsi wave their national flags during a demonstration where protesters have installed their camp and hold their daily rally, at Nasr City, Cairo, Egypt, Friday, July 19, 2013. (AP Photo/Hussein Malla)

  • A supporter of Egypt's ousted President Mohammed Morsi, center, offers her Friday prayer where protesters have installed their camp and hold their daily rally, at Nasr City, Cairo, Egypt, Friday, July 19, 2013.” (AP Photo/Hussein Malla)

  • Supporters of Egypt's ousted President Mohammed Morsi carry a man who fainted from the heat during a demonstration where protesters have installed their camp and hold their daily rally, at Nasr City, Cairo, Egypt, Friday, July 19, 2013. (AP Photo/Hussein Malla)

  • A supporter of Egypt's ousted President Mohammed Morsi offers his Friday prayer where protesters have installed their camp and held their daily rally, at Nasr city, Cairo, Egypt, Friday, July 19, 2013. (AP Photo/Hussein Malla)

  • A supporter of Egypt's ousted President Mohammed Morsi wear wears a headband with Arabic that reads: "Egypt," during a demonstration where protesters have installed their camp, at Nasr City, Cairo, Egypt, Friday, July 19, 2013.” (AP Photo/Hussein Malla)

  • Supporters of the Muslim Brotherhood and ousted Egyptian president Mohamed Morsi hold his picture as they march towards Cairo University to demand his reinstatement in Cairo on July 19, 2013. (KHALED DESOUKI/AFP/Getty Images)

  • Residents of Rabaah al-Adawiya neighborhood hold Arabic placards that read:"Not to terrorize the residents," as they march during a protest against the supporters of ousted Egyptian President Mohammed Morsi, who have installed their camp and hold their daily rally on their area, at Nasr city, Cairo, Egypt, Thursday, July 18, 2013. (AP Photo/Hussein Malla)

  • Residents of Rabaah al-Adawiya neighborhood hold Arabic placard that reads:"Will not be silent anymore,"left, and SOS as they march during a protest against the supporters of ousted Egyptian President Mohammed Morsi, who have installed their camp hold and their daily rally on their area, at Nasr city, Cairo, Egypt, Thursday, July 18, 2013. (AP Photo/Hussein Malla)

  • Residents of Rabaah al-Adawiya neighborhood hold up an Arabic placard that reads:"Not to terrorize the residents," as they march during a protest against the supporters of ousted Egyptian President Mohammed Morsi, who have installed their camp and their daily rally on their area, at Nasr city, Cairo, Egypt, Thursday, July 18, 2013. (AP Photo/Hussein Malla)

  • Residents of Rabaah al-Adawiya neighborhood, hold Arabic placards that read:"Not to terrorize the residents," as they march during a protest against the supporters of ousted Egyptian President Mohammed Morsi, who have installed their camp and their daily rally on their area, at Nasr city, Cairo, Egypt, Thursday, July 18, 2013. (AP Photo/Hussein Malla)

  • A supporter of Egypt's ousted President Mohammed Morsi sits in front of his poster in a park in front of Cairo University, where protesters have installed their camp in Giza, southwest of Cairo, Egypt, Thursday, July 18, 2013. (AP Photo/Amr Nabil)

  • Supporters of Egypt's ousted President Mohammed Morsi check women at sand barriers recently set up for women to enter where protesters have installed their camp at Nasr City in Cairo, Egypt, Thursday, July 18, 2013. (AP Photo/Hussein Malla)

  • A firework launched by opponents of ousted President Mohammed Morsi explodes during clashes in downtown Cairo, Egypt on Monday, July 15, 2013. (AP Photo/Hussein Malla)

  • An Egyptian boy takes pictures of supporters of Egypt's ousted President Mohammed Morsi, who are seen praying the the Tarawih prayer, after the evening meal when Muslims break their fast during the Islamic month of Ramadan, in front of Cairo University, where protesters have installed their camp in Giza, southwest of Cairo, Egypt, late Wednesday, July 17, 2013. (AP Photo/Hussein Malla)

  • This image released by the Egyptian Presidency shows interim President Adly Mansour, center, meeting with European Union foreign policy chief, left, and Egyptian Foreign Minister Nabil Fahmy, second right, in Cairo, Wednesday, July 17, 2013. (AP Photo/Egyptian Presidency)

  • Egyptian riot police work during a demonstration for supporter of ousted President Mohammed Morsi, near Tahrir Square in downtown Cairo, Egypt, Wednesday, July 17, 2013. (AP Photo/Khalil Hamra)

  • Supporters of ousted President Mohammed Morsi demonstrate near Tahrir Square in downtown Cairo, Egypt, Wednesday, July 17, 2013. (AP Photo/Khalil Hamra)

  • A supporter of Egypt's ousted President Mohammed Morsi, talks to riot police standing guard during a demonstration near Tahrir Square in downtown Cairo, Egypt, Wednesday, July 17, 2013. (AP Photo/Khalil Hamra)

  • Egyptian riot police stand guard during a demonstration by supporters of ousted President Mohammed Morsi, near Tahrir Square in downtown Cairo, Egypt, Wednesday, July 17, 2013. (AP Photo/Khalil Hamra)

  • A supporters of Egypt's ousted President Mohammed Morsi cries during the evening prayers in a park in front of Cairo University, where protesters have installed their camp in Giza, southwest of Cairo, Egypt, late Tuesday, July 16, 2013. (AP Photo/Amr Nabil)

  • Silhouetted supporters of ousted President Mohammed Morsi throw stones towards opponents of Morsi during clashes on a bridge in downtown Cairo, Egypt, Monday, July 15, 2013. (AP Photo/Hussein Malla)

  • Opponents of ousted President Mohammed Morsi run from fireworks fired by pro-Morsi supporters during clashes on a bridge in downtown Cairo, Egypt, Monday, July 15, 2013. (AP Photo/Hussein Malla)

  • A Supporter of ousted President Mohammed Morsi holds a poster of him during clashes in downtown Cairo, Egypt, Monday, July 15, 2013. (AP Photo/Khalil Hamra)

  • Egyptian soldiers take position outside the presidential palace as opponents of ousted president Mohamed Morsi arrive to break their fast with the iftar meal in Cairo on July 12, 2013. (GIANLUIGI GUERCIA/AFP/Getty Images)

  • Supporters of ousted Egyptian president Mohamed Morsi, chant slogans against Defense Minister Abdelfatah el-Sisi close to the Republican Guards headquarters on July 12, 2013. (MARWAN NAAMANI/AFP/Getty Images)

  • Fireworks burst over opponents of Egypt's ousted Islamist President Mohammed Morsi during a rally outside the presidential palace in Cairo, Egypt, Sunday, July 7, 2013. (AP Photo/Hassan Ammar)

  • Egyptian clerics, supporting the ousted Egyptian President Mohammed Morsi, leave al-Azhar mosque following a protest in Cairo, Egypt, Sunday, July 14, 2013. (AP Photo/Hussein Malla)

  • Supporters of the ousted Egypt's President Mohammed Morsi, stand behind a wall made by the protesters, as they look to the Egyptian army soldiers, not seen, at blocked highway that link to the airport, in Cairo, Egypt, Friday, July 12, 2013. (AP Photo/Hussein Malla)

  • Supporters of Egypt's ousted President Mohammed Morsi pray during the Friday prayer in Nasr City, Cairo, Egypt, Friday, July 12, 2013. (AP Photo/Hussein Malla)

  • Supporters of Egypt's ousted President Mohammed Morsi chant slogans during a demonstration in Nasr City, Cairo, Egypt, Friday, July 12, 2013. (AP Photo/Hussein Malla)

  • Egyptian army soldiers stand guard as supporters of Egypt's ousted President Mohammed Morsi walk towards a park near Cairo University, where protesters have installed their camp in Giza, southwest of Cairo, Egypt, Friday, July 12, 2013. (AP Photo/Amr Nabil)

  • An opponent of ousted Egypt's Islamist President Mohammed Morsi shows a banner in Tahrir square, in Cairo, Egypt, Friday, July 12, 2013. (AP Photo/Hassan Ammar)