Update: Violent Sexual Assault

The Calgary Police Service Sex Crimes Unit is releasing additional photos and video of a person of interest in a recent sex assault.

At approximately 3:45 a.m., on Sunday, Dec. 20, 2015, police received a call from security guards at a parkade in the 200 block of 6 Avenue S.W. The guards had come across a severely beaten woman who had been sexually assaulted in one of the parkade's stairwells. 

A woman in her 40s suffered serious injuries and was transported to hospital.

The photos and video released today was captured from CCTV within the parkade and show the man wearing a black and grey backpack.

This man remains a person of interest in this case and investigators need to speak with him.

The first suspect in this case is a dark-skinned man, between 5'6" and 5'8" tall, with a slim build. He was wearing a tuque, a brown sweater, black jacket and blue jeans. His jacket had fur around the hood and he was wearing runners. 

The second man is a person of interest, and is described as brown-skinned, possibly of Middle Eastern descent, with a slim build. He was wearing a tracksuit and a red coat.

Police are asking anyone with information about this case or the people involved to call the non-emergency line at 403-266-1234, or Crime Stoppers anonymously using any of the following methods:

TALK: 1-800-222-8477

TYPE: www.calgarycrimestoppers.org

TEXT: tttTIPS to 274637

The Calgary Police Service encourages all victims of sexual assault, or any crime, to report to the police. 

Media advisory to follow