According to investigators, two individuals were involved in a dispute while driving southbound on SR-826.  Once on the NW 25th Street exit ramp both vehicles came to a stop. The driver of the tractor trailer exited the truck armed with a knife, and walked toward to the black Nissan Altima.  The driver of the Nissan exited his vehicle and a physical altercation ensued.  During the altercation, the driver of the Nissan produced a firearm and shot the truck driver.  Responding officers detained the shooter.  Miami-Dade Fire Rescue responded and the victim was determined deceased on the scene.  The shooter was transported to the Homicide Bureau for further questioning.  No other injuries were reported. 

The investigation continues.