A London police constable has been charged with assault after an arrest in May left a 60-year-old man with serious injuries.
Const. Omar Hassan is charged with assault causing bodily harm.
The special investigations unit say London police got a call before 8 a.m. on May 12 about a man standing on the side of Wellington Road, south of Wilkins Street.
Officers responded, arrested the man, but later released him with no charges.
Later that day, the man was taken to hospital "as a result of experiencing pain," the SIU said in a media statement.
"He was later diagnosed with serious injuries."
The officer will appear in court in September.
The SIU says they are currently investigating 10 other cases involving London police officers.
The SIU investigates incidents in which police are involved that result in injuries, sexual assault or death.