LITTLE ROCK, Ark. (AP) _ A former prosecutor awaiting sentencing on a drug conviction was arrested over the weekend for allegedly trying to buy drugs to use with his girlfriend.

Dan Harmon, who once headed the region's anti-drug task force as a prosecutor, did not enter a plea in federal court on Monday. He was being held in the county jail.

After Harmon allegedly tried to buy methamphetamines, FBI agents arrested him early Saturday at an apartment complex where his girlfriend lives. He tried to flee but gave up shortly after diving into a lake, according to an FBI affidavit.

Authorities found no drugs on Harmon or in his vehicle. His arrest was based on information obtained in recorded telephone conversations between Harmon and his girlfriend, according to authorities.

Harmon was convicted in June on one count of racketeering, three counts of extortion and one count of marijuana possession.

Harmon already faced up to 20 years in prison and a $250,000 fine on each of the five counts, although the sentence could be lighter under federal sentencing guidelines. Sentencing has not been scheduled.