There will be an independent investigation into a complaint about the leader of St. Joseph County's Metro Homicide Unit.

South Bend Police Officer Jack Stilp filed a complaint that Metro Commander Tim Corbett threatened him over the phone.

Last week two Common Council members called for a special prosecutor in the case. But St. Joseph County Prosecutor Mike Dvorak told us that wasn't possible because Stilp didn't file a criminal complaint...so there's no criminal investigation.

Now the prosecutor's office says it recommended this independent probe after asking for and getting a written response from Commander Corbett.

Officer Stilp filed an internal report May 11 about a conversation he says he had with Corbett. When WSBT asked council members why Corbett would have called Stilp, they said it goes back to what's rumored to be on the recorded phone calls at the center of the wiretapping investigation at the South Bend Police Department.

South Bend's Interim Police Chief Chuck Hurley tells our news partners at the South Bend Tribune internal affairs is still looking into Stilp's report.

Hurley told the Tribune it's possible Stilp could face disciplinary action for releasing the report to the media.