The estranged wife of a former Texas justice of the peace has testified that her husband fatally shot a district attorney, his wife and a senior prosecutor.

Eric Williams was convicted Dec. 4 in the shooting death of Cynthia McLelland. He is also charged, but has not been tried, in the deaths of Kaufman County District Attorney Mike McLelland and assistant prosecutor Mark Hasse (HAS'-ee).

Kim Williams, who is also charged in the slayings, told jurors Tuesday that she was a "willing participant." Prosecutors say she drove the getaway car.

Prosecutors are seeking the death penalty for Eric Williams. They say he launched a revenge plot to kill the three because McLelland and Hasse prosecuted him for stealing county equipment, leading to him losing his job and law license.