Atwater police have identified the officer as Dave Sarginson. He's a 13 year veteran with their department. We're told he was unconscious in his patrol car when first responders arrived. He was flown to a Modesto hospital, but his exact condition is not known at this time.
The CHP says three officers were heading to a call with their lights and sirens on, but officer Sarginson was trailing them by a bit. When he made it to the intersection, one vehicle had already made a left turn, and a 2003 Cadillac tried to do the same thing when it collided with the patrol car. The driver of that Cadillac is identified as 34-year-old David Macias Rodriguez. He was taken to the hospital with a shoulder injury, and a 5-year-old girl who was a passenger in his car was not hurt.
We'll have more information when it becomes available.