A Shawnee man was killed Friday evening after the driver of a red Chevrolet struck his lawn mower from behind, Shawnee police released Monday.

According to Shawnee Police Department Cpl. Vivian Lozano, Darold Madden, 38, was rushed to OU Medical Center and pronounced dead by EMTs after the vehicle struck him from behind as he was driving his lawn mower westbound on Federal Street.

The driver's name hasn't been released because no arrests have been made; the case is still under investigation.

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