Nova Scotia's Serious Incident Response Team has launched an investigation after a man's ribs were fractured during an arrest by the Halifax police.

The agency said that on Dec. 15, police stopped a car on Chappell Street and arrested a 47-year-old man on an outstanding warrant.

There was a physical struggle between the man and police officers, and three days after the man was arrested he was diagnosed with rib fractures.

The man then contacted the review team to ask for an inquiry, and an investigation began Friday.

SIRT is responsible for investigating all serious incidents involving police in Nova Scotia, whether or not there is an allegation of wrongdoing.