UPDATED July 14, 1 p.m.
Sam Mingsan Chen, 79, of Rockville, was pronounced dead at the scene, according to Montgomery County Police. He was driving a silver 2012 Toyota Camry and was attempting to turn left from southbound Stoney Creek Road onto eastbound River Road. There is a stop sign on Stoney Creek Road.
According to police, the driver of the other car, a white 2019 Ford F-550 was traveling westbound on River Road at the time of the accident.
One man is dead following a two-vehicle collision by River Road and Stoney Creek Road in Potomac Wednesday at 1:50 p.m.
Montgomery County Fire and Rescue personnel and county police officers responded to the scene of the collision, where an adult male driver was pronounced dead.
Police are investigating and will release more information when it becomes available.
This fatal accident occurred three days after another fatal collision in which two people were killed by Georgia Avenue and May Street in the Wheaton-Glenmont area.