Update: Serious Collision in Derwood Now Fatal

Detectives from the Collision Reconstruction Unit continue to investigate a now fatal collision that occurred on Sunday, November 18.

On November 18 at approximately 10:09 p.m., officers from the 5th District and Montgomery County Fire and Rescue Service personnel responded to Muncaster Road in the area of Beechdale Court for a single-vehicle collision.

Preliminary investigation revealed that a 2006 Chevrolet Cobalt was traveling southbound on Muncaster Road when for reasons still under investigation, it left the roadway and hit an embankment and rolled over.  Further assessment of the scene revealed that the passenger of the Cobalt was ejected from the car during the collision.  Investigators believe that a dark-colored Ford Mustang may have been involved in some manner with the collision.  Investigators are seeking to speak with the driver of the dark-colored Ford Mustang.

The driver of the Cobalt has been identified as 24-year-old Mario Antonio Jandres-Rivera of Ginger Court in Germantown.  Mr. Jandres-Rivera was transported to a local hospital where he is reported to be in stable condition.

The passenger of the Cobalt has been identified as 23-year-old Oscar Eduardo Rivas-Macal of Washington Grove Lane in Gaithersburg.  Mr. Rivas-Macal was transported to a local hospital with life-threatening injuries.  Mr. Rivas-Macal succumbed to his injuries at the hospital on Friday, November 23, 2018.

This collision remains under investigation. Anyone with information is asked to call the Collision Reconstruction Unit at 240-773-6620.

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CTJ