An anonymous tip about suspected drug activity led Bulloch County Drug Suppression investigators to make seven methamphetamine arrests Tuesday.The anonymous caller told drug agents about suspected methamphetamine manufacturing at a Mud Road home, Bulloch County Drug Suppression Team Capt. Rick Rountree said.When drug investigators went to the home, they spoke with Amy Leigh Dickerson, 29, of Whitaker Lane in Brooklet, and then searched the home. They seized a quantity of methamphetamine and charged her with methamphetamine possession, Rountree said.Dickerson’s boyfriend, James Franci, 32, of Jennie Wright Road in Pembroke, also was charged with possession of methamphetamine after he turned himself in to authorities Wednesday, Rountree said.After obtaining information during the search and investigation at the Mud Road home, drug agents questioned Jacob Ryan Smith, 35, at his home on Starling Road in Pembroke. During the course of investigation, Smith “tried to sell (meth) to an undercover officer,” he said.