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ALSIP, Ill. — A tollway worker was struck and killed by a vehicle on Interstate 294 on Monday, officials said.

The 48-year-old man was killed on I-294 southbound at 127th Street at about 12:23 p.m. Monday.  Two right lanes were blocked in the area due to the incident. He was later identified as David Schwarz.

Illinois State Police said the man was outside of his vehicle picking up debris along the right shoulder. As he walked back to his car, a semi-truck pulling a trailer side swiped the worker and his car.

The truck driver did not stop.

Authorities did not release a description of the suspect vehicle, just that it was a tractor-trailer.

Traffic in the area was delayed for hours as police investigated.