The body of a man has been found on the 11th floor of an apartment building in Vancouver's West End.

Vancouver Police say 38-year-old Marc Rozen was the victim of a vicious assault.

Downstairs neighbours in the building in the 1800-block of Haro Street say they heard long bangs and screams around dinner time Tuesday – then quiet.

The entire floor of the building was cordoned off as detectives in white coveralls searched the suite.

"The Vancouver Police Department is seeking information on a suspect who is described as a white male 28 to 33 years old," says Const. Sarah Bloor, who adds that the tall, thin man hasn't been seen since Tuesday afternoon.

Rozen had rented the condo unit for a few months from the family of an elderly women who had passed away.

He is Vancouver's third homicide victim of the year.