A man was killed and at least six others injured in a four-car crash on Pacific Coast Highway that police believe was caused by a speeding DUI driver Tuesday evening, officials said.

Police believe that just before 5 p.m., 31-year-old Norwalk resident Mario Medrano was driving at a high speed southbound on PCH in a 2015 Nissan Altima with three other people inside. Medrano then swerved into oncoming traffic south of Loynes Avenue, hitting a 1994 Nissan truck driven by a 62-year-old Long Beach resident, police said. Medrano then continued southbound on the wrong side of the road on PCH, hitting a 2010 Toyota Prius driving northbound. The impact pushed the Prius into the southbound lanes of PCH where it was hit by a 2008 Honda Pilot that had been driving southbound, police said.

Paramedics took three of the four people in Medrano’s car were taken to a local hospital with non-life threatening injuries. They tried life saving measures at the scene for the fourth occupant, but he died at the scene. He is only being identified as a 30-year-old Los Angeles man, pending notification of his family.

The two people in the Prius and the only person in the Honda were also taken to a local hospital with non-life threatening injuries.

Police said all drivers stayed at the scene and cooperated with investigators. The drivers of the Prius, Honda and truck were released at the scene.

Medrano was arrested on suspicion of driving under the influence and murder. He is being held in jail on a $2 million bail.

Police ask that anyone with information regarding the collision to contact Detective Kelsey Myers 562-570-7355. Anonymous tips may be submitted by calling 800-222-8477 or by visiting www.crimestoppers.org.