A 44-year-old motorcyclist was killed in a crash Monday night in Antioch.
It happened in the 5400 block of Hickory Woods Drive in Antioch around 8:20 p.m.
Officials told News 2 the driver, identified as William Deck, struck a mailbox after he failed to negotiate a curve.
Police said alcohol involvement is suspected in the deadly crash.
A blood alcohol test will be conducted.