CHICAGO (CBS) — One person was killed overnight in a motorcycle accident on the Kennedy Expressway.

The motorcycles were riding together on the outbound Kennedy at Canfield Avenue around 11:40 p.m. Thursday, when one of the cyclists swerved to avoid something in the road and crashed into the other, Illinois State Police said.

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The cyclist who swerved – Thomas Winkelman, 43, of Harwood Heights – was dead on the scene, state police told the Sun-Times Media Wire. Winkelman was riding a Harley Davidson, the wire reported.

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The other motorcyclist was riding a Honda, and was taken to Advocate Lutheran General Hospital in Park Ridge with serious injuries, state police told the wire. Alcohol is not believed to be involved in the crash.

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The entire outbound Kennedy was closed at Harlem Avenue for hours after the crash. But CBS 2’s Derrick Young reports all lanes had reopened by 5 a.m.