MEMPHIS, Tenn. —A second suspect has been arrested, and police are looking for two more men, after boxes of medication were stolen from delivery drivers outside two Memphis pharmacies. Wardell Thomas, 32, was arrested Friday and charged with Conspiracy to Commit Aggravated Robbery. His bond was set at $15,000, and he is out on bail. Memphis Police say two more men are wanted in connection: Fredrick Pirtle, 25, has a warrant for Aggravated Robbery. Warren McGowan, 29, has a warrant for two counts of Aggravated Robbery, Carjacking, and Employment of a Firearm During the Commission of a Dangerous Felony. Two pharmacy delivery truck thefts linked to suspect (from left) Fredrick Pirtle and Warren McGowan are wanted. Wardell Thomas (right) has been arrested. (MPD photos) Javorian Miller already had been arrested and charged in the case. One theft happened in November, the latest happened on Christmas Eve. Memphis Police say security camera video shows one of the suspects stealing a cart loaded with seven totes of medicine, taken at gunpoint Nov. 29 from a delivery truck driver outside Walgreens in the 4600 block of Summer Avenue. Miller was also been charged in a similar robbery Christmas Eve morning at the CVS pharmacy at Union and Cooper, where he and another suspect allegedly held up a delivery truck driver and made off with a van full of thousands of dollars worth of pharmaceuticals.