Police have contacted the family and identified the pedestrian. No further information was immediately provided.
East Hampton Town Police are asking for help in identifying the young woman, whom they described as Hispanic, 15 to 17 years of age, weighing 100 pounds, wearing dark clothing including black pants and a black hooded sweatshirt, wearing earbuds and carrying a pink pocketbook.
Police have not been able to identify the girl and to reach members of her family. They said she was conscious but incoherent.
Those with information have been asked to call East Hampton Town Police dispatch at (631) 537-7575.
A woman was airlifted to Stony Brook University Hospital on Tuesday afternoon with severe injuries after being struck by a truck on Springs-Fireplace Road in East Hampton.
The woman, whose identity is not known, was crossing the road in a crosswalk near the intersection with Abrahams Path when she was struck by the vehicle, which was traveling northbound, according to emergency personnel.
A witness said the woman did not speak English. The driver of the vehicle pulled over and helped translate for emergency responders.
She was taken by Springs Fire Department ambulance to East Hampton Airport, where she was transferred into a Suffolk County Police medevac helicopter to be taken to Stony Brook.