MARIETTA - After a nearly six-month investigation, Marietta police have arrested three out of the five people who they say robbed or conspired to rob a Dunbar Armored Car courier in October outside the Mex-America Latino Service on South Marietta Parkway. DeKalb police are also charging two of the suspects in other armed robberies of armored vehicles.

Police have charged Dunbar employee Veronica Bullard, 32, of Lithia Springs, her brother-in-law Quentin Booker, 34, of Douglasville, and Stacey Dooley, 34, of Snellville with armed robbery and conspiracy to commit armed robbery. A fourth suspect, Chris Bennett, was killed in an unrelated case that is being investigated by DeKalb Police, and a fifth suspect is still being sought, according to Marietta Police.

"They all got together and conspired to commit armed robbery," said Marietta Police Officer Jennifer Murphy.

Murphy said the robbery unfolded when Bennett and an unidentified black man entered the business and waited as a Dunbar guard collected cash. As the Dunbar guard returned to his armored car, Bennett and the unidentified man robbed him, Murphy said. Nearly $105,000 was taken, according to an arrest warrant for Bullard, who, as a Dunbar employee, provided information on the armored vehicle's location, Murphy said. Bullard's warrant states that Booker and Dooley also provided information about the vehicle's whereabouts. Booker is believed to have driven the getaway car.

The robbery caused nearby Southern Polytechnic State University to be locked down for about an hour.

In DeKalb, Dooley is charged in a March 25 armed robbery and fatal shooting of a Garda Armored Car courier. Dooley and Booker are also charged in a third armed robbery of a Loomis armored vehicle at a Wells Fargo in DeKalb. Another individual, Ashley Henderson, 27, is also charged in those two incidents.

Bullard is being held in the Cobb Jail without bond. Booker and Dooley are being held by Gwinnett County.

Marietta Police Chief Dan Flynn praised Marietta Detective Daniel Ohmann for helping to crack the case. Anyone with any information is asked to contact Ohmann at 770-794-5372.