A father and son were walking when they were stuck by a pickup truck in Sullivan County. 

State police are investigating hit-and-run that occurred in Livingston Manor Monday night.

At approximately 10:30 p.m. a father and son were struck by a light colored pickup truck while walking in the area of Old Route 17.

After striking the pair, the vehicle fled the scene.

The son was transported to Catskill Regional Medical Center where he was treated and released.

The father was transported to Westchester Medical Center where he was listed in critical condition.

State Police are asking anyone with information to please contact the State Police at (845) 292-6600