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JACKSONVILLE, Fla. -- The Jacksonville Sheriff's Office has released the identity of a man killed in a single-car crash on Kernan Boulevard on Thursday morning.

Joseph Adcock, 25, was killed when his truck overturned, partially ejecting and trapping him, according to a news release from Jacksonville Sheriff's Office Public Information Officer Shannon Hartley.

Police said the crash caused both lanes of North Kernan to be closed this morning near Crabapple Court. The road was reopened shortly before 7 a.m.Thursday morning.

According to a witness, Adcock's white pickup truck was traveling north on Kernan when he crossed into the southbound lane. According to JSO, Adcock's truck returned to the northbound lanes but afterwards flipped, pinning the driver underneath.

Deputies on the scene say speed was a factor in the crash.