FOLSOM, Pa. (CBS) – Four teenagers are recovering after being the victims of a hit-and-run accident in Delaware County Friday night.

At about 11 p.m. Ridley Township Police responded to a report of an accident that took place on Morton Avenue and MacDade Blvd. in Folsom. According to authorities, when police arrived, they found four teenage victims between the ages of 14 and 15 who were struck by a red vehicle that fled the scene.

Investigators say the vehicle was a Ford Windstar with the Pennsylvania registration number GNC-3268 and was operated by Tyrone J. Williams.

According to investigators, Williams sped up in an attempt to beat the red light and ultimately failed to stop, striking the four victims who were crossing the street. Authorities say the impact of the vehicle caused two of the victims to go airborne.

A Ridley Township officer happened to be on patrol nearby and observed William’s vehicle. Authorities say the officer followed the van and noticed Williams began to cross the double yellow lines into the oncoming traffic, almost striking other vehicles.

Authorities say Williams eventually corrected his mistake and traveled to the right side of the lane and almost struck the curb. The officer activated his emergency lights and siren to conduct a vehicle stop. William’s vehicle continued to travel at a slow speed, striking the curb several times before stopping at Chestnut Street.

When the officer approached the vehicle, he noticed that Williams had tears streaming down his eyes. William’s left eye was completely red, according to police.

When the officer noticed that the vehicle was consistent with evidence at the scene, authorities say he asked Williams if he was aware that he hit something on MacDade Blvd. Williams allegedly replied, “I heard a thump, but I kept driving. I think it was a cone because there was construction at that intersection yesterday.”

The officer explained that a person was struck and returned Williams to the scene of the accident where two witnesses confirmed his red vehicle, authorities say. Williams was then taken into custody.

Further investigation revealed that William’s driver’s license expired on November 29th, 2010 and his operating privileges were recalled in May of that same year, according to police. He was admitted to George Hill Correctional Facility.

Police say three of the four victims were in serious condition and were airlifted to the Children’s Hospital of Philadelphia and to the Hospital of the University of Pennsylvania. The fourth victim, police say, is listed in critical condition and was transported to Taylor Hospital.

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