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Detectives Investigate River Rd. Fatality; Victim’s Identity Released

For Immediate Release: Thursday, July 14, 2022

Gaithersburg, MD - Detectives from the Montgomery County Department of Police – Collision Reconstruction Unit (CRU) are investigating a fatality that occurred on the early afternoon of July 13, 2022, in the area of River Rd. and Stoney Creek Rd. 


At approximately 1:50 p.m., 1st District officers and Montgomery County Fire Rescue personnel responded to the location for the report of a traffic collision. 


The investigation by detectives has determined that the driver of a white 2019 Ford F-550 was traveling westbound on River Rd. The driver of a silver 2012 Toyota Camry was attempting to make a left turn from southbound Stoney Creek Rd. onto eastbound River Rd. This intersection is controlled by a stop sign located on Stoney Creek Rd.  


The driver of the Toyota was pronounced dead at the scene. The driver has been identified as 79-year-old Sam Mingsan Chen, of Rockville.  


This is an active and ongoing investigation. 


The Collision Reconstruction Unit continues to investigate this collision. Anyone with information regarding this collision is asked to contact CRU detectives at 240-773-6620.

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Release ID: 22-361
Media Contact: CC 
Categories: fatal-collision