Authorities have released the name of the person who was killed early Sunday in a suspected DUI collision on Highway 101 in Montecito.

The victim was Louis Hernandez Jr., 77, of Santa Paula, according to Lt. Jarrett A. Morris of the Santa Barbara County Sheriff’s Office.

Firefighters and other emergency personnel were dispatched at about 3:10 a.m. Sunday to the crash on the southbound freeway just before the Olive Mill Road exit, where the three-lane highway merges into two lanes, according to the California Highway Patrol.

Four other people were hurt in the crash.

The most seriously injured were in a Mercury Mountaineer SUV that went down an embankment off the highway, according to the Montecito Fire Protection District.

Hernandez, a passenger in the Mountaineer, was ejected from the vehicle and was fatally injured, said CHP Officer Michael Fabila.

The driver, Virginia Montelongo, 67, of Santa Paula, suffered moderate injuries and had to be extricated from the wreckage.

She was taken by American Medical Response ambulance to Santa Barbara Cottage Hospital for treatment of her injuries.

Three people in the other vehicle — a Toyota Camry — sustained minor injuries, Fabila said.

The Camry driver, Ricki Newton, 22, of Port Hueneme, was arrested on suspicion of felony DUI and vehicular manslaughter, Fabila said, and was booked into the Santa Barbara County Jail.

The collision remained under investigation by the CHP.