Two teen sisters were struck by a car on Merrick Road Tuesday night, seriously injuring one, police said.
The accident occurred at 8:20 p.m. when the sisters, ages 13 and 15 were crossing north on Merrick outside Burns Park.
The were hit by a 2006 Toyota Corolla driven by an 18 year-old woman. The 15-year-old sustained head injuries and is listed in serious but stable condition after being airlifted to a local hospital.
The 13 year-old was treated for leg injuries and is in stable condition.
The driver remained at the scene and passed a breathalyzer test. Police say there is no apparent criminality.
The car was impounded for safety checks.
The incident happened during the Town of Oyster Bay's annual "Salute to America" event at Burns Park. It wasn't immediately known if the girls were coming from the popular celebration.
It was the second accident this week on Merrick Road. On Monday night, a man was killed by a hit and run driver, according to police.