Vancouver police have no suspect and no victim, but they have video of what is believed to be a violent assault of a woman.
Police became aware of the attack when a business turned in video that had been captured on video from its security camera.
The video was from Feb. 2 of this year and police say they've taken a number of steps to try and identify the man and woman involved, but have been unsuccessful.
#VPD needs your help identifying this man after apparent violent assault on a woman http://t.co/NHbi2UvNuB pic.twitter.com/mD1UPtWRoF
— Vancouver Police (@VancouverPD) September 16, 2015
Investigators are looking for a white man, aged 25 to 40, with a medium build.
He was wearing dark Adidas track pants, a grey hoodie, a light-billed baseball cap and had a dark, hiking-style backpack.
Police say the 30- to 50-year-old aboriginal or Asian woman had short dark hair and was wearing a grey long-sleeved shirt and black pants.