A 13-year-old pedestrian struck by a hit-and-run driver in Coram on Wednesday was pronounced dead Saturday at Stony Brook University Hospital. 

Police say Tyler Phillips and his sister Krystal Randolph were walking westbound in the bike lane on Granny Road, near Middle Island Road when they were struck by a vehicle that fled the scene.

Relatives say the car had no headlights on and that Phillips pushed his sister out of the way and endured the brunt of the crash.

Phillips, of Coram, was transported in an ambulance to Stony Brook University Hospital in critical condition. He had been on life support for the past several days.

His sister, who is also from Coram, was transported to the same hospital for treatment of minor injuries to her arm.

Suffolk County Police Major Case Unit detectives believe the vehicle that struck Phillips and Randolph was a light grey 2005-2009 Chevrolet Equinox. They say the vehicle’s front passenger headlight is missing, and there is damage to the front passenger bumper. The side view front passenger mirror is broken.

Anyone with information about the incident is urged to call detectives at 631-852-6555 or Crime Stoppers at 1-800-220-TIPS.