As the weeklong manhunt for the suspect arrested in the killings of four relatives of a baby found abandoned in Tennessee came to an end on Tuesday, police revealed the suspect’s girlfriend is related to the victims.

Byron Black, 69, was convicted in 1989 of the Nashville killings of his ex-girlfriend Angela Clay, 29, and her daughters, Latoya, 9, and Lakesha, 6.

The state of Tennessee executed a convicted murderer on Tuesday, despite recent efforts to prevent his death sentence. On Tuesday morning, 69-year-old Bryon Black was put to death by lethal injection at the Riverbend Maximum Security Institution in Nashville for murdering his girlfriend,