PORTSMOUTH — A section of Interstate 95’s southbound lane near exit 5 was closed for several hours early Saturday after an accident involving a truck that spilled about 50 gallons of diesel fuel, state police said.

Police said Johnson Corrielus, 35, of Milton, Mass., was heading south on the interstate when he lost control of a 2008 Peterbilt truck at 2:18 a.m. Saturday. The truck went off the road, broke through a guardrail and overturned, puncturing one of its fuel tanks.

One lane of the road was closed for several hours while crews cleaned up the spilled fuel, police said. Corrielus was not injured in the crash, police said.