Police say the killer sought in Sunday's shooting death of a young mother in suburban Atlanta wore a wig and a fake mustache.

Twenty-five-year-old Heather Struble of Conyers was gunned down in a Target store parking lot.

Snellville Police Chief Roy Whitehead said Struble had just picked up her 18-month-old son during a custody swap when another man approached her.

Witnesses told police Struble argued with the suspect before she was shot in the head.

Detectives hope surveillance video will lead them to a suspect.