Dickerson tells The South Reporter that a fifth suspect wanted in both robberies was still at large.
The robberies occurred on May 19 at the Slayden branch of the Bank of Holly Springs and June 10 at the Citizens Bank branch at Barton.
Dickerson says the four charged with armed robbery in the Slayden robbery were Marcus Westbrook, Starlet Kizer, Angela Bryson Miller and William Albright, all of Memphis.
Dickerson says Kizer and Bryson are also charged with armed robbery in the Barton bank holdup.
Dickerson says federal charges are pending.