09/30/2014 12:19 EDT | Updated 11/30/2014 05:59 EST

Abdul Monir homicide probe: Police hope to ID potential witness

It appears a woman walked by a Toronto pizza shop around the time that a deadly shooting unfolded earlier this month, and police believe she could have valuable information for investigators.

Toronto police Det.-Sgt. Graham Gibson spoke to reporters on Tuesday morning about the ongoing investigation into a shooting that left Abdul Monir dead and another man wounded on Sept. 14.

The shooting occurred at the Pizza Time restaurant at 561 Markham Rd., just south of Lawrence Avenue East. Police suspect the two employees were shot during a robbery.

"I believe that they got caught up in this plan to rob the pizza parlour," Gibson said during a news conference at Toronto police headquarters.

Monir, 31, had recently come to Canada from Afghanistan. He'd only been working at the pizza shop for a couple of weeks when he was killed.

His family has been in frequent contact with police regarding the homicide investigation.

"They call me every day, or they email me and I update them as best I can," Gibson said.

Gibson said the surviving victim remains in critical condition. Police have yet to speak to him, but intend to do so once he is medically cleared to have be interviewed.

On Tuesday, police released a series of video clips, showing a suspect being dropped off near the pizza shop, the suspect vehicle driving to a nearby location, the suspect running back to the suspect vehicle, and a woman who was walking by as these events unfolded and who may have been walking home.

The woman was caught on video walking south on Markham Road at about 12:07 a.m. on Sept. 14.

"I want to stress that this is a witness and it’s not a person of interest or a suspect," Gibson said.

Gibson asked for that individual to call him personally if she recognizes herself in the video, or for others to do the same if they know who she is.

Police are also asking those who were in the area that day to review the video clips in the event that they spur any recollections they may not have shared with investigators so far.

Anyone with information is asked to contact police at 416-808-7400.