Toronto police have arrested a suspect after a 66-year-old woman was killed in a violent assault in the city’s west end.

Police say they were called to a building on Weston Road just south of Lawrence Avenue around 6:45 p.m. Friday.

Homicide detective Rob North says a woman was found with obvious trauma to her upper body. He says the assault occurred inside an elevator on the upper floors of the building.

Paramedics transported the victim to a trauma centre. She was pronounced dead at the hospital, police said.

Police have identified the victim as Margaret Cameron, 66, of Toronto.

North said there was a “sexual assault component” to the incident. It’s unknown at this point if a weapon was used.

Police arrested the suspect without incident after finding him at a downtown address.

Karl Hoyes, 49, has been charged with first-degree murder. Police say further charges could be laid and he was known to police.

The victim was a resident of the building and the suspect had previously been a resident. It’s believed the victim and suspect had brief interactions prior to the alleged murder, but they were not well known to each other.

They are asking any witnesses to come forward with information.