JARRATT, Va. (AP) _ A man who fatally shot a gas station cashier 11 years ago as her husband and two young daughters decorated the station for the holidays was executed by injection Tuesday.

Tony A. Mackall was convicted of capital murder in the Dec. 9, 1986, robbery and shooting death of Mary Elizabeth Dahn, 31.

Mackall, 33, entered the gas station in the northern Virginia community of Woodbridge, demanded money and shot Mrs. Dahn in the head while her family was putting up holiday decorations.

After fleeing with $515, Mackall drove to a nearby development and shot a man twice in the head while trying to steal his car. The man, Michael Keating, survived and testified against Mackall.

In appeals, Mackall's lawyers had argued that he suffered severe head trauma during a troubled childhood, had a low I.Q., and received poor legal help.