SWAN HILLS, Alta. - A Swan Hills grizzly bear attack has left a hunter facing potentially life-threatening injuries.

The Shock Trauma Air Rescue Service, or STARS, says the 48-year-old man was attacked Tuesday while hunting in the Swan Hills region north of Edmonton.

Cam Heke, a spokesman for STARS, says the big predator attacked the man from behind.

Heke says the hunter was able to scare off the bear by firing a shot from his gun.

He then managed to walk about six kilometres to an area where he could call for help on his cellphone.

The man was located and taken to hospital in Grande Prairie, where a trauma team was waiting for him.

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  • Kamchatka bear twins named Cuba and Toby, with their mother Kamcatka play in the outdoor enclosure at Brno Zoo for the first time on May 31, 2012. The Kamchatka bear is the largest subspecies of brown bear, weighing up to 1000 kg. RADEK MICA/AFP/GettyImages

  • Kamchatka bear Kamcatka, mother of twin bear cubs, plays in the outdoor enclosure at Brno Zoo for the first time on May 31, 2012. The Kamchatka bear is the largest subspecies of brown bear, weighing up to 1000 kg. RADEK MICA/AFP/GettyImages

  • Polar bear Anori lays in the sun on May 30, 2012 at the zoo in Wuppertal, western Germany. Anori was born January 4, 2012 at the zoo in Wuppertal and is a half-sister of world famous polar bear Knut, who died in 2011. FEDERICO GAMBARINI/AFP/GettyImages

  • A black bear is seen in the Shenandoah National Park in Virginia. KAREN BLEIER/AFP/GettyImages

  • Two Giant Pandas at an enclosure before they are taken back to the wild, at the Wolong National Nature Reserve in Wolong, southwest China's Sichaun province on May 3, 2012. The bears will be left to fend for themselves to learn crucial survival skills, and scientists plan to gradually reduce human interactions until they can live in the wild without any assistance, and while there have already been 10 attempts at setting pandas free over the past 30 years, and only two are thought to have been successful as the bears find it very hard to survive on their own. STR/AFP/GettyImages

  • A mother polar bear plays with one of her three cubs born in last November, at the Moscow Zoo, on March 22, 2012. ANDREY SMIRNOV/AFP/Getty Images

  • KINGUSSIE, SCOTLAND - APRIL 09: Walker (L) the polar bear meets with new male companion Arktos at the Highland Wildlife Park on April 9, 2012 in Kingussie, Scotland. Arktos arrived from Hannover Zoo in Germany on April 4 to be a companion to the Park's resident polar bear Walker. A year older than Walker and slightly larger, Arktos is four-years-old and it's hoped that the bears will establish a relationship of friendly competitiveness. (Photo by Jeff J Mitchell/Getty Images)

  • QUANZHOU, CHINA - FEBRUARY 24: (CHINA OUT) Bears stand by a wall at a bear farm of Guizhentang Pharmaceutical Co Ltd on February 24, 2012 in Quanzhou, Fujian Province of China. The Guizhentang Pharmaceutical Co Ltd, which makes medicine using bile extracted from live bears, opened one of its bear farms to the media on Wednesday, to quell growing criticism. (Photo by ChinaFotoPress/ChinaFotoPress via Getty Images)

  • A bear is seen at one of the traditional Chinese medicine company Guizhentang's controversial bear bile farms in Hui'an, southeast China's Fujian province on February 22, 2012. Bear bile has long been used in China to treat various health problems, despite skepticism over its effectiveness and outrage over the bile extraction process, which animal rights group say is excruciatingly painful for bears. STR/AFP/Getty Images

  • This photo taken on January 17, 2012 shows a zoo keeper attending to a new-born polar bear cub at the Ocean Aquarium of Penglai, in Yantai, in east China's Shandong province. This female cub was delivered by five-year-old polar bear 'Pengpeng' on January 1 weighing 640 grams, as the first polar bear born in the aquarium. STR/AFP/Getty Images

  • A spectacled bear (tremarctos ornatus), born in captivity four months ago, is seen at the zoo in Cali, Valle del Cauca department, Colombia, on January 11, 2012. LUIS ROBAYO/AFP/Getty Images

  • A pair of Brown bears play fight December 21, 2011 at the Bronx Zoo in New York. DON EMMERT/AFP/Getty Images

  • KINGUSSIE, SCOTLAND - DECEMBER 07: Walker the polar bear plays with a hard hat on his third birthday at the Highland Wildlife Park on December 7, 2011 in Kingussie, Scotland. Walker was born in Rhenen Zoo in Holland on 7th December 2008. He came to live at the Highland Wildlife Park after his aunt, Freedom, became pregnant and needed to retire to her cubbing den, his mother was also due to come on heat and be reintroduced back to the Zoo's adult male, Walker's dad. (Photo by Jeff J Mitchell/Getty Images)

  • EDINBURGH, SCOTLAND - DECEMBER 16: Tian Tian the female panda bear looks out from her enclosure as members of the public view her for the first time at Edinburgh Zoo on December 16, 2011 in Edinburgh, Scotland. The eight-year-old pair of giant pandas arrived on a specially chartered flight from China over a week ago and are the first to live in the UK for 17 years. Edinburgh zoo are hopeful that the pandas will give birth to cubs during their 10 year stay in Scotland. (Photo by Jeff J Mitchell/Getty Images)

  • Polar bears play in the water of Blijdorp Zoo in Rotterdam, Netherlands on September 30, 2011. The weather forecast for the weekend to come promises plenty of sunshine and temperatures around 25 degrees. ROBERT VOS/AFP/Getty Images

  • KEENESBURG, CO - OCTOBER 20: A grizzly bear waits to be fed at The Wild Animal Sanctuary on October 20, 2011 in Keenesburg, Colorado. The non-profit sanctuary is a 720-acre refuge for large carnivores that have been confiscated from illegal or abusive situations and is currently home to over 290 lions, tigers, bears, wolves and other large carnivores. It is the oldest and largest carnivore sanctuary in the United States, having been in operation since 1980. On Tuesday the owner of a Zanesville, Ohio private animal reserve set loose 56 animals, of which 49 were hunted down and killed by law enforcement and six others were tranquilized and are being treated at the Columbus Zoo. (Photo by John Moore/Getty Images)

  • A bear is seen in the Kuwait Zoo in the heart of the capital on September 4, 2011. YASSER AL-ZAYYAT/AFP/Getty Images

  • Polar bear shakes off water in his enclosure at the zoo on July 26, 2011 in Prague. MICHAL CIZEK/AFP/Getty Images)

  • A brown bear rests at the Safari park in Fasano, in the Apulia region, on August 4, 2011. GIUSEPPE CACACE/AFP/Getty Images

  • A three month old bear cub who was born at the zoo in Stavropol takes a walk on May 5, 2011. DANIL SEMYONOV/AFP/Getty Images

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