When Toronto police Sgt. Christopher Heard was found guilty of sexual assault Thursday, it marked the first time in at least six years that such charges from Ontario's police watchdog led to a conviction against a Toronto officer.

The Special Investigations Unit (SIU) has looked into 82 allegations of sexual assault by Toronto police officers since 2013, according to case data obtained by CBC Toronto. Of those, only five cases have led to sexual assault-related charges.