All five teens killed in a Memorial Day car wreck died of multiple traumatic injuries, the Orange County coroner said Thursday.
Autopsies were performed this week on the remains of the teens, who perished when their car hit a tree on Jamboree Road, according to the coroner's office.
Toxicology tests will also be performed as a matter of course, an Orange County Sheriff's Department spokesman said.
However, results from toxicology screens, which look for signs of alcohol and drugs use, can take several weeks.
About 5:20 p.m. Monday, a 2008 Infiniti driven by Abdulrahman M. Alyahyan, 17, veered into the center divider on Jamboree Road, crashing into a tree. Alyahyan and Nozad al-Hamawendi, 17, Ceclia Zamora, 17, and sisters Aurora Cabrera, 16, and Robin Cabrera, 17, died as a result of the crash.
The passengers attended Irvine High School. Alyahyan went to University High School, also in Irvine.
Alyahyan did not have a driver's license but had a pending application, according to the Department of Motor Vehicles.
He received a traffic citation April 20 for violating the terms of his provisional license, and having a modified exhaust system and tinted windows that obscured the driver's view.
Newport Mayor Keith Curry said he had been told the car may have been traveling in excess of 100 miles per hour. Police cannot confirm that figure.