Police investigating the suspicious death of 22-year-old Tess Richey say they are now looking for a man who may have been in her company just before her death.

Richey was reported missing on Nov. 25, having last been seen around 3 a.m. that morning. Her body was found four days later on Wednesday afternoon outside of a building under construction at Church St. and Dundonald St., only a short distance from where she was last seen at Church and Wellesley.

While police did not initially suspect foul play, a post-mortem conducted on Friday shows that Richey’s cause of death was a “neck compression,” which changed the ruling to a homicide.

Police now say it is believed Richey was in the presence of a man shortly before her death.

They say that when her friend left the area, Richey was alone with this man on Church St. somewhere between or around Wellesley St. and Dundonald St. from 2 a.m. to 5 a.m.

The man has been described as white and somewhere between 5-foot-7 to 6 feet tall, with a slim build and light-coloured short hair.

Homicide investigators are seeking to identify him. Anyone with information is asked to contact police at 416-808-7400.

With files from Jenna Moon