Funeral arrangements are set for a 39-year-old police officer and married father of four who was fatally shot in a Detroit suburb.

Elton Black & Son Funeral Home says a funeral Mass for Officer Pat O'Rourke is scheduled for 10:30 a.m. Friday at St. John the Evangelist Parish in Fenton, followed by a cemetery service.

Visitation is 2-8 p.m. Wednesday and 2-8 p.m. on Thursday at the Highland Chapel of the Elton Black & Son Funeral Home in Oakland County's Highland Township.

A candlelight vigil was held Tuesday night outside the West Bloomfield Police Department.

Watch: Uncut: Vigil for West Bloomfield police officer Patrick O'Rourke

The Oakland County Sheriff's Office will patrol the township so officers can attend the funeral.

West Bloomfield Police Chief Michael Patton said a former auto executive, Ricky Coley, who was facing business and family troubles fired on police responding to a call at his home on Sunday night, killing the West Bloomfield Township officer and sparking a 20-hour siege that ended with the suspect dead amid a weapons-strewn bedroom.

The Oakland County medical examiner's office said the 39-year-old O'Rourke died from a single gunshot to the head.

Coley's mother and brother made the call to police as they were helping him pack up to move back to North Carolina. Coley was in the middle of a divorce and was losing his home.

Patton said officers had been called to Coley's home about a month ago after family members said he was suicidal over his severe financial troubles. Patton said officers left confident that Coley was OK.

--Ricky Coley

O'Rourke was a West Bloomfield officer for 12 years. He was married and had four children.

--The O'Rourke family

Patton says his department is in "shock."

"The loss of officer Patrick O'Rourke is devastating to us. In the history of the West Bloomfield Police Department, we've never suffered such a loss before. So, this is new to us," he said. "We know given the line of work we do it's always a possibility, and we understand that, but it's still something we hope never happens."

Fund established for O'Rourke family

Anyone interested in donating to the family can do so at any Bank of America to the "Officer Patrick O’Rourke Family Trust."

Patrick O'Rourke family Facebook page