The grand jury charged Tracy Lamont Lindsey, 15; Joseph Lashun Jordan, 18; Rufus Khalid-Durand Van, 16; and Artavious Sylvester Feazell, 19; with murder, armed robbery and possession of a firearm during the commission of a crime, according to the indictment.
Investigators said Luckey was sitting on a couch at his 2832 Hoods Lane residence when he was shot through a kitchen window with a 9mm handgun about 11:30 p.m. on May 6.
The teens then entered his home and took two lockboxes. Before leaving, they again shot Luckey, who lay bleeding but alive.
Luckey's housekeeper previously had mentioned to her cousin, Feazell, that her employer, who relied on a oxygen tank and suffered heart problems, had a lot of money around the house.
Authorities have said they believe the teens had been planning to rob Luckey for about a week.
At a hearing in May in which bond was denied for three of the teens, Assistant District Attorney Pittman Morris said much of the authorities' information has come from Jordan.
Jordan was pulled over by deputies and questioned about 40 minutes after the slaying, Morris said.
In interviews with police, Jordan has admitted that he was the one who killed Luckey, Morris said.
"Jordan says he shot him through the window and shot him a second time," Morris said.