Authorities say a domestic argument turned violent when a man fatally shot his girlfriend and her parents in the family's home in south Memphis. The suspect then turned himself in to authorities with his 4-year-old in tow.

Memphis police say they found the girlfriend, Pashea Fisher, 23, and her father, Arithio Fisher, 56, dead in a bedroom early Thursday. Her mother, Patricia Fisher, 46, was taken to a hospital, where she later died.

Police have withheld the name of the suspect because he has not been charged. Spokeswoman Karen Rudolph says the shooter left the home but then surrendered to authorities about two hours later. He showed up at a police station with his and his girlfriend's daughter. The girl was turned over to children's services officials.