A 20-year-old woman was killed in Fayette County while taking her infant to the apartment of the baby’s father for visitation, and the man was arrested and charged with aggravated murder.

Fayette County deputy sheriffs were called around 6 p.m. Monday to the Pine Tree apartment complex on a report of a shooting, the sheriff’s office said. The complex is off Joanne Drive just south of Route 22 and east of Bogus Road in Union Township several miles east of Washington Court House.

Deputies arrived to find a man — later identified as Joseph A. Brown, 21, of Washington Court House — leaving an apartment building, and they learned that he was the person believed to have fired the shots.

Those deputies and others responding to the scene found 20-year-old Lilliana M. Null of Cincinnati in a yard behind another apartment building with gunshot wounds. Null was pronounced dead at the scene.

An investigation determined that Null and Brown had recently separated but shared a baby. The sheriff’s office said Null had been taking the baby to Brown’s home for visitation.

The baby and another person who were in Null’s vehicle when she was shot were not harmed.

The sheriff’s office said Fayette County Children Services took custody of the baby.

Brown was being held in the Fayette County jail.

bbruner@dispatch.com

@bethany_bruner