All lanes of U.S. Highway 101 in Menlo Park have opened this morning more than three hours after a four-vehicle, fatal collision forced the closure of the entire northbound side of the highway, according to the California Highway Patrol.

The accident occurred at 2:05 a.m. when a vehicle spun out and collided into the highway's center divide, according to a CHP dispatcher. The vehicle was then reportedly struck head-on by another vehicle. CHP Officer Grace Castillo said a total of four vehicles were involved in the collision.

One person died as a result of the crashes and three other were transferred to Stanford Medical Center with varying injuries, according to Castillo.

The collision forced the temporary closure of all northbound lanes. At 4:34 a.m., the No. 1 lane of the highway opened, a dispatcher said.

A Sig-alert was issued at 2:13 a.m. and all lanes were open by 5:20 a.m.

The cause of the collision is under investigation but Castillo said one person was arrested for allegedly driving under the influence.

— Bay City News