Winnipeg police are trying to figure out what prompted a man to knock on the door of an apartment suite and attack another man, sending him to hospital in critical condition.

The attack happened early Sunday morning in an apartment building in the 1000 block of Bairdmore Boulevard in south Winnipeg. Officers were called there at about 1:45 a.m.

According to police, an unknown man knocked at the door of the suite, then pushed his way inside and assaulted a 27-year-old man.

A woman inside the apartment intervened by biting the suspect's right hand.

The suspect ran away, but not before stealing a cellphone, according to police.

Const. Jason Michalyshen said investigators aren't sure what prompted the suspect to target that particular apartment.

"Right now we're very unclear as to the motivation," he told reporters on Monday.

"Definitely a lot of questions [are] unanswered with respect to what the motivation was with respect to the suspect. However, a cellular phone was stolen."

The male victim was taken to hospital in critical condition, but he has since been upgraded to stable condition.

Police are looking for a man between 20 and 30 years old, about six feet tall with a medium build and very short light brown hair.

Anyone with information about the suspect or the incident is asked to call investigators at (204) 986-2877 or Crime Stoppers at (204) 786-TIPS (8477).

View Larger Map