Nassau County police investigate a fatal bicycle crash on S. Marginal...

Nassau County police investigate a fatal bicycle crash on S. Marginal Road in Syosset on Saturday. Credit: Jim Staubitser

A 51-year-old bicyclist died on Saturday morning after hitting a parked tractor trailer on a Syosset service road, police said.

The bicyclist was traveling east on S. Marginal Road, near Robbins Lane, between Exits 43 and 44 of the LIE around 9 a.m. when he struck the legally parked tractor trailer, the Nassau County Police Department said in a statement.

The bicyclist was pronounced dead at the scene, authorities said. Nassau police did not release the name of the bicyclist.

Emergency responders closed a section of the service road near the Long Island Expressway during the investigation. Authorities could be seen inspecting the rear of a large truck.

No criminality is involved, police said.

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