Updated

Police say a 69-year-old suburban Atlanta man faces a murder charge after authorities say he shot and killed a 22-year-old man who had pulled into his driveway.

Gwinnett County Jail records show that Phillip Walker Sailors was being held on a murder charge after the Saturday night shooting in Lilburn, northeast of Atlanta.

An arrest warrant states that 22-year-old Rodrigo Abad Diaz of Duluth was shot in the head as he tried to drive away from Sailors' home.

Sailors' attorney, Michael Puglise, tells The Atlanta Journal-Constitution that he was home with his wife late at night, and assumed the young man arrived for a home invasion.

Puglise says Sailors was defending his home and maintains his innocence.

Lilburn police declined to release additional information about the circumstances of the shooting.