WASHINGTON — Detectives from the Montgomery County Police Department-Collision Reconstruction Unit are investigating a serious collision that occurred Saturday night in Gaithersburg, Maryland.

At approximately 9:30 p.m., officers and Fire and Rescue personnel responded to the area of Muddy Branch Road and West Diamond Avenue for the report of a single-vehicle collision.  Officers located a 2004 Infiniti and three occupants.

A 6-year-old male passenger was transported to a local hospital with life-threatening injuries.  An 8-year-old male passenger was transported to a local hospital with non-life-threatening injuries.  The driver, identified as Ana C. Martinez De Sanchez, age 28, of the 17000 block of Downing Street in Gaithersburg, was transported to a local hospital with non-life-threatening injuries.

The preliminary investigation reveals that the Infiniti was traveling north in the southbound lanes of Muddy Branch Road and struck a traffic island at the intersection of West Diamond Avenue. Detectives are also investigating alcohol as a contributing factor to this collision.

Anyone who witnessed this collision or has information about this collision is asked to call the Collision Reconstruction Unit at 240-773-6620.