WYOMING, Ont. - Ontario's police watchdog is investigating after a vehicle crashed and rolled over during a police chase east of Sarnia.

Provincial police say they were pursuing a vehicle near Wyoming, Ont. Saturday night when it crashed into a field.

They say the driver ran away but was caught and arrested.

Police say the driver and two passengers were taken to a Sarnia hospital.

The Special Investigations Unit is now investigating the incident.

The SIU is an arm's length agency that investigates reports involving police where there has been death, serious injury or allegations of sexual assault.