The province's Special Investigations Unit is looking into an incident Friday in which an Ottawa police cruiser struck a 73-year-old woman.

The SIU said at about 11:48 a.m. Friday an officer with the Ottawa Police Service was driving on Elgin Street when the vehicle struck the woman and a 48-year-old man near Sparks Street.

The woman was taken to hospital in serious condition and is being treated for fractures.

The cruiser involved was a patrol vehicle, according to a police spokesperson.

Seven SIU investigators have been assigned to the case.

The SIU is an arms-length provincial agency that looks into deaths, sexual assaults or serious injuries in which police are involved.