Upset homeowner shoots real estate agent in Mich.

A man upset about a property transaction fatally shot a real estate agent in the head during a meeting Tuesday morning in the victim's office, authorities said.

(Business Week) -- Troy VanderStelt, 34, was pronounced dead at 12:45 p.m. at Mercy Health Partners Hackley Campus in Muskegon, said Muskegon County Prosecutor Tony Tague.

A suspect was arrested a short time after the shooting at a home in nearby Norton Shores. Tague identified him as Robert Arnold Johnson, 73, of Roosevelt Park.

Johnson was scheduled to be arraigned Wednesday in Muskegon County District Court on charges of first-degree premeditated murder and using a firearm during the commission of a felony, the prosecutor said.

A conviction on the murder count carries a mandatory life prison sentence with no possibility of parole.

Tague said Johnson plotted to kill VanderStelt, took a .22-caliber semiautomatic handgun to the real estate agent's office, got him preoccupied with some paperwork in a conference room, stood next to him, pulled out the gun and shot him once in the temple.

"We believe this was a planned-out execution-style murder of the real estate agent," the prosecutor said.