EDISON - Authorities say an armed bandit wounded during a botched bank robbery in Edison later shot himself as police tried to arrest him in a nearby field.

Officials say they won't know which shot killed the man until an autopsy is completed.

Middlesex County Prosecutor Bruce Kaplan says the man tried to rob the PNC Bank on Amboy Avenue shortly after 10 a.m. yesterday. But an armored car company employee who was inside the bank shot and wounded the man, who then fled and ran through a nearby A&P Supermarket before ending up in the field near the store.

As three Edison police officers approached him, officials say the man put his gun to his head and fired it. Kaplan says the officers didn't discharge their weapons.

The man later died at a nearby hospital.

AP wire services contributed to this report.