Investigators are contacting Olympic gold medallist Bruce Jenner and other drivers involved in a fatal chain-reaction crash in California to ask for access to their mobile records, authorities said.
They are trying to determine if distracted driving played a role in the weekend four-vehicle crash on the Pacific Coast Highway in Malibu. Such a request has become routine in collisions where someone is killed, Los Angeles County sheriff's Sgt Philip Brooks said.
A publicist for Jenner says he was not texting while driving and the evidence will show that.
Jenner won a gold medal in the men's decathlon at the 1976 Summer Games, but he is known to a younger generation as Kim Kardashian's stepfather.
Alan Nierob said investigators had not yet requested Jenner's records but that Jenner will provide them if they do.
Jenner was driving a black Cadillac Escalade when he ran into the back of a Lexus sedan. The sedan slammed into a Toyota Prius that had slowed or stopped on the road, sheriff's Sgt Philip Brooks said.
The Lexus veered into oncoming traffic and collided head-on with a black Hummer. The driver of the Lexus - Kim Howe, 69 - died at the scene.
In his first comments since Saturday's crash, Jenner called the crash a "devastating tragedy" and vowed to cooperate with investigators.
"My heartfelt and deepest sympathies go out to the family and loved ones, and to all of those who were involved or injured in this terrible accident," Jenner said. "It is a devastating tragedy. I cannot pretend to imagine what this family is going through at this time. I am praying for them."
Jenner passed a field sobriety test and voluntarily submitted a blood sample to determine whether he was intoxicated, they said.
Sgt Brooks said it is difficult to determine if a driver was texting at the exact time of a collision. Investigators will look at signs of driver behaviour such as multiple texts that span a period leading up to, or including, the crash, Sgt Brooks said.