By Jennifr Mooney Piedra and Adam H. Beasley
The Miami Herald
PEMBROKE PINES, Fla. — A vast manhunt is underway for the gunman who killed an off-duty federal agent in a dispute outside one of Broward's busiest post offices Tuesday morning.
The agent, who was with U.S. Customs and Border Protection, died at Memorial Regional Hospital less than three hours after he was shot about 9 a.m. during an argument with a man in the parking lot of the South Florida Mail Processing Center on Pines Boulevard.
Customs agent shot dead at Fla. post office