A man who fled a traffic stop in Seward County was struck and killed by a vehicle on Interstate 80.

The man, who was driving a vehicle with Illinois license plates, was headed east on I-80 east of Milford. About 3:15 p.m. Thursday, a Seward County sheriff’s deputy pulled the vehicle over for a traffic stop.

In a search of the vehicle, the deputy found “a large number of narcotics,” according to a press release.

The driver, who was the only person in the vehicle, ran into the eastbound lanes of traffic, the Seward County Sheriff’s Office said. He was struck by a westbound vehicle and taken to Seward Memorial Hospital in Seward, where he was pronounced dead.

No one else was injured.

Following state law, a grand jury will be convened to review the death, which is considered an in-custody death. The Sheriff’s Office has asked the Nebraska State Patrol to investigate.