FORT WORTH, Texas (AP) -- A juvenile services worker says a man convicted of killing a Texas pastor had been committing crimes since he was a teenager.

The testimony came Monday during the punishment phase in Steven Lawayne Nelson s trial.

Nelson was convicted earlier Monday of capital murder for killing Rev. Clint Dobson at Arlington s NorthPointe Baptist Church. He also beat the church secretary before stealing her car.

Tarrant County juvenile services worker Mary Kelleher says Nelson was 14 when sent to a juvenile prison for unauthorized use of a motor vehicle and burglary. Other testimony revealed he assaulted a jail guard last year.

Nelson is facing the death penalty or life in prison without parole. Defense attorneys say he had serious family issues, including setting his mother s bed on fire at age 3.

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