A South Thomaston man found hiding at a house in Monmouth has been charged with aggravated cocaine trafficking, the Maine Drug Enforcement Agency said Tuesday.

The charge is the latest in a long criminal history for John Wall.

Wall, 45, had been missing since the early spring when he realized drug agents were investigating him for cocaine trafficking, investigators said in a prepared statement. Drug agents say Wall is a major cocaine supplier in the Rockland area.

He was found hiding in the Monmouth house on Aug. 10, according to the Maine Drug Enforcement Agency.

He was charged with aggravated cocaine trafficking, cocaine trafficking and violation of bail. Wall’s criminal record includes prior charges of burglary and cocaine possession, according to police.

Drug agents say Wall supplied cocaine to a number of other people facing cocaine trafficking charges.

Wall’s arrest was part of a string of drug arrests the Maine Drug Enforcement Agency has made this month in Knox County.

David Libby, 40, of Rockland was arrested Aug. 3 and charged with aggravated trafficking of Xanax. His fiancee, Charlotte Shellman, 36, was issued a summons on charges of aggravated trafficking of Xanax and Ritalin.

She was already in police custody on unrelated theft charges, according to police.

Wall, Libby and Shellman are being held at the Knox County jail in Rockland.