A 30-year-old Sonoma County man was arrested on suspicion of felony drunken driving early Saturday morning after being involved in a crash on Highway 101 in San Rafael that killed another driver, the CHP said.

CHP officials said that at 1:20 a.m. they received a call about a possible drunken driver traveling north on Highway 101 in the area of North San Pedro Road. The caller reported seeing a silver 2001 Mitsubishi Montero driving erratically before it went off the roadway and across the shoulder toward an embankment, officials said.

The suspected drunken driver, Osmon DeLeon of Petaluma, then swerved back onto the highway and struck from behind a red 2007 Toyota Yaris. The crash caused both vehicles to overturn on the highway before they came to rest on their wheels.

When emergency responders arrived, they saw the Yaris blocking the fast lane with two occupants inside. DeLeon’s car was blocking the slow lane. DeLeon did not have any passengers.

All involved in the crash were taken to Marin General Hospital. The driver of the Yaris was pronounced dead shortly after arriving at the hospital.

The passenger of the Yaris was treated for bruises and pain before being released, CHP officials said.

A DUI investigation was initiated after DeLeon showed signs of intoxication, the CHP said. He was expected to be booked into Marin County Jail following his clearance from the hospital. DeLeon was arrested on suspicion of two counts of felony DUI causing injury or death, gross vehicular manslaughter while intoxicated and driving while unlicensed.

The identity of the deceased had not been released pending notification of next of kin.