Toronto police are searching for a suspect after a young female was allegedly sexually assaulted in a Jane Street apartment building.

It was reported that on Friday around 10:30 p.m. the victim was followed by the suspect on a TTC bus to the Jane Street and Sheppard Avenue West area.

The suspect then allegedly followed the victim to her apartment building and sexually assaulted her in the elevator.

The suspect is described as black between 18 and 20 years of age, about five-foot-six-inches tall with a slim to average build.

He was last seen wearing a dark-coloured cap, a dark face covering, a white hooded sweater, with a black vest, dark pants, and dark-coloured sneakers.

Security images of the suspect have been released to assist police in their search.

Investigators are asking anyone with information, or who knows the suspect, to contact police at 416-808-3100.