An allegedly intoxicated tractor-trailer driver slammed into the back of a sedan early Thursday, killing two and causing a six-vehicle pileup that snarled southbound traffic on Highway 135 in Orcutt for more than eight hours.

California Highway Patrol officer Benjamin Smith said the driver of the tractor-trailer, 56-year-old Gilbert Pena of Santa Maria, was arrested on suspicion of DUI in connection with the crash. Though an investigation is ongoing, drugs and/or alcohol are believed to have contributed to the collision.

At 6:29 a.m. Pena was driving in the left lane of southbound Highway 135, north of Union Valley Parkway, at an unknown rate of speed, according to Smith. Pena's tractor-trailer struck the rear of a Nissan, killing the driver, 60-year-old Orcutt resident Rickie Motley, and his passenger, 24-year-old Solvang resident Jesse Donald Gluyas.

Four additional vehicles were struck as a result of the collision.

Responding crews, including the Santa Barbara County and Santa Maria Fire departments, extricated several victims who were trapped in their vehicles, according to Santa Barbara County Fire Capt. Dave Zaniboni.

While the majority of the involved parties suffered no injuries, two occupants complained of minor pain and were treated at the scene. Pena was transported by American Medical Response to Marian Regional Medical Center with minor injuries.

The CHP and Santa Barbara County Sheriff's Office are investigating the incident.

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