Ashley Henderson, 27, and Stacy Dooley, 34, were each charged with murder, aggravated assault and possession of a firearm by a convicted felon in connection with the slaying. A third person, whom police have not identified, is also charged with murder.
The signed warrants came on the same day that police announced the arrest of an armored car company employee in connection with a string of armored car and ATM robberies. Veronica Bullard, 32, was charged with being a party to an armed robbery and is also the sister-in-law of Quentin Booker, who was arrested Wednesday on three counts of armed robbery. Booker is charged with armed robbery, aggravated assault and possession of a firearm by a convicted felon.
According to police records, Bullard worked for Dunbar, the largest independent armored car company, according to the company's website, up until the time of her arrest.
Police are on the lookout for Edward Thornton, who they believe is also part of the ring. Police said Thornton was involved in armed robberies at the Mall of Georgia and Buford.
Booker and Dooley were taken into custody on Wednesday in Gwinnett County. Channel 2's Erica Byfield was at Dooley's Snellville home Wednesday night as police retrieved items in a search.
Dooley and Booker are suspected in eight metro Atlanta armed robberies that began in fall 2010, Gwinnett police Cpl. Edwin Ritter said. The robberies occurred at several locations, including a Kroger store in the Toco Hill neighborhood of DeKalb County where Castillo was shot to death.
Previous Stories: March 31, 2011: 2 Men Suspected In String Of Armored Car Robberies March 30, 2011: Family Of Slain Armored Car Guard Reacts To Arrests March 19, 2011: Friends Mourn Armored Car Guard Killed In Robbery March 17, 2011: Armored Car Guard Killed After Tour In Afghanistan March 15, 2011: Guard Killed In Armored Car Robbery; $100K Reward Offered January 22, 2011: Armored Truck Robbed, Guard Shot In DeKalb