ROCKLAND — The licensed operator of the Turning Tide Methadone Clinic was charged with cocaine possession today after drug agents saw her participate in a drug deal, according the Maine Department of Public Safety.

Angel Fuller-McMahan, 42, of Owls Head, was arrested around 10:45 a.m. today after police stopped her 2000 Ford Escort while she was driving along New County Road.

Agents with the Maine Drug Enforcement Agency made the arrest, assisted by officers from the Rockland Police Department, Knox County Sherriff’s Office and Maine State Police.

Drug agents arrested Fuller-McMahan after they saw her participating in a drug deal in a private parking lot along New County Road, said Roy McKinney, director of the MDEA.

Agents seized Fuller-McMahan’s car, about an ounce of cocaine that was hidden in her pants and some hypodermic needles, McKinney said. The street value of the cocaine is about $2,500.

She was taken to the Knox County Jail in Rockland and has been freed on $5,000 unsecured bail pending an Aug. 25 appearance in Rockland Superior Court.

McMahan was arrested by MDEA in 1997 and convicted of possessing heroin, according to police.