Kardashian family patriarch Bruce Jenner will be asked to provide his cellphone to determine if he was texting when he was behind the wheel of an SUV involved in a multi-vehicle crash in Malibu that killed a woman.
Los Angeles County Sheriff's Department Sgt. Philip Brooks investigators will likely ask all the drivers to voluntarily provide their phones.
Seven others were injured in the fatal accident on Saturday. Investigators are trying to determine who or what triggered the crash.
However, authorities said there's no indication Bruce Jenner was being chased by paparazzi before the crash.
The former Olympic gold medalist wasn't hurt, but seven people were taken to the hospital.
Brooks said Jenner cooperated with investigators and passed a field sobriety test.
Jenner was going north when his black Cadillac Escalade rear-ended a Lexus sedan that had just struck the back of a black Toyota Prius, Brooks said. The Lexus veered into oncoming traffic in a southbound lane and collided head-on with a black Hummer.
The driver of the Lexus - a woman in her 70s - was pronounced dead at the scene. Photos of the crash site showed the white Lexus mangled in the front and back, facing the Hummer, which had a heavily damaged engine and its hood popped open.
Jenner's Escalade, which was pulling an off-road vehicle, had a damaged front end. The crash comes at a time of widespread talk that Jenner (65) is becoming a woman.
Jenner won a gold medal in the men's decathlon at the 1976 Olympics, but he is best known as Kim Kardashian's stepfather.