BEAR, Del. (CBS) — Delaware State Police are investigating a single-car crash that killed two teenagers Thursday afternoon.

Authorities say the accident happened at about 3:15 p.m. in the northbound lanes of Route 1 in Bear, Delaware.

According to investigators, a 17-year-old was traveling in the middle lanes at apparent high rate of speed when he attempted to make a right hand lane change in order to avoid a slower moving vehicle in front of him.

The teen driver lost control, veered off the roadway and struck a guardrail. The car eventually overturned onto its roof.

The driver, who was not wearing a seatbelt, was ejected from the vehicle. He was pronounced dead at the scene.

A 16-year-old female passenger from Newark, DE, was also pronounced dead at the scene. She was wearing a seatbelt at the time of the crash.

Route 1 was closed for nearly four hours while crews investigated the crash and worked to clear the scene.

The identities of the victims were not immediately released.

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