The SIU has been called in to investigate the case of a 31-year-old man who suffered a hand injury during an altercation with Windsor Police. 
Police say officers came across the man, who was wanted on a number of outstanding warrants, late Tuesday night – he fled on foot and officers gave chase, eventually catching up with him in a Vanier Street backyard.
He was later taken to hospital and diagnosed with a hand injury.
The Special Investigations Unit, which is called in any time police are involved in a situation where there has been a death, serious injury, or sexual assault.
Two investigators and a forensic investigator have been assigned to the case.