Seven suspects were arrested in Berkeley County on drug-related charges, authorities said.

Six of them were charged with manufacturing methamphetamine and possession of a large quantity of Ephedrine after a Jan. 4 search of a residence on Winter Court in the Moncks Corner area, the Sheriff's Office reported Friday.

Charged were Joshua Alton Quick, 21, of Summerville; Jennifer Leigh Martin, 42, of Cottageville; and Moncks Corner residents Sara Elaine Aikman, 26, Jamie McCallister, 20, Danny Ray Ratliff, 27, and Charles Simmons Harris III, 22, officials said.

More arrests are expected in connection with the case, authorities said.

The Sheriff's Office reported Friday that on Wednesday it arrested Daniel A. Thornburg, 23, of Summerville on charges of possession with intent to distribute marijuana and possession with intent to distribute methamphetamine at a residence on Sandy Run Circle.

Deputies discovered Thornburg was wanted on six outstanding warrants on charges including third-degree assault and battery, driving with a suspended license and animal cruelty, officials said.