State Patrol spokesman Gordy Wright said the trooper was traveling in downtown Atlanta with lights and siren activated Saturday afternoon when the cruiser struck the SUV at an intersection. Wright says the trooper was trying to help another trooper stop a motorcyclist.
Authorities say Kathy Porter, a passenger in the SUV, died. Police say Jeff Porter and two other passengers, the couple's 19-year-old son David and a friend, were taken to a hospital for treatment of injuries and later released.
The trooper was examined at the same hospital and released.

http://accesswdun.com/article/2012/1/244673