A motorcyclist was killed when he hit the center divider on the Golden State (5) Freeway near the U.S.-Mexican border in San Ysidro Saturday.
The crash occurred on the freeway's southbound lanes just north of the border point-of-entry at about 2:25 a.m., the California Highway Patrol said.
The CHP shut down some lanes on the freeway for more than three hours as officers investigated.
The cause of the crash is unknown, officials said.
