CANBERRA, Australia (AP) — Police say they are investigating the death of a man who was reportedly killed when an explosive vest he was wearing detonated while he was driving his car in a suburban street in the Australian city of Melbourne.

Seven News reports the vest is understood to have been triggered by the car hitting a speed bump in the suburb of Hallam on Saturday morning,

The car continued to travel a few hundred meters before it hit a parked vehicle.

A police statement said on Tuesday emergency services found a 43-year-old man dead inside his car, which also contained “explosive items.”

Seven says he visited the home of his ex-partner immediately before his death.