08/17/2010 AT 8:15 PM ET
Dr. Frank Ryan, plastic surgeon to Heidi Montag and other celebrities, was sending Twitter messages about his border collie before his fatal car accident.
The California Highway Patrol is investigating whether Ryan was texting at the time he crashed Monday and it has not yet concluded that that’s what caused the accident.
“It is one of the elements that we are investigating,” CHP Officer Steven Reid says. “We are looking into that and other things.”
A close friend of Ryan’s says Ryan sent two Twitter messages Monday afternoon with photos taken on the beach, but she expects the CHP will conclude Ryan was not texting when the car went off the cliff.
“He would actually pull over to make phone calls,” says Lawonna Rashad.