(CBS/AP) LILBURN, Ga. - 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 mistakenly driven into his driveway.

An arrest warrant states that Rodrigo Abad Diaz of Duluth, Ga., was fatally shot in the head Saturday as he tried to drive away from Phillip Sailors' home in Lilburn, northeast of Atlanta.

According to Diaz's friends, who were in the vehicle at the time of the incident, the 22-year-old had received incorrect directions from a GPS device which led him to Sailors' driveway, the Atlantic Journal-Constitution reports. They were in the area to pick up a friend.

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 to commit a home invasion. Puglise says Sailors was defending his home and maintains his innocence.

Gwinnett County Jail records show that Sailors was being held on a murder charge.