Four dozen people have been arrested in Bienville Parish in a roundup of suspected drug dealers -- including one who tried to slip out a window, saw the house was surrounded and got back in bed and waited to be handcuffed. The arrests follow an undercover operation that ran for nine months last year. Undercover agents bought crack cocaine, marijuana, methamphetamine and prescription drugs, Bienville Sheriff John Ballance said today. All of the suspects are street-level dealers selling small amounts of drugs for individual consumption, Ballance said. Twenty-nine people had been arrested over the course of the past few months. Teams of arresting officers from 11 law enforcement agents fanned out this morning to arrest 20 more, Ballance said. As of this afternoon, 17 people were in custody. Another was in jail in another parish and one had made arrangements to surrender to sheriff's deputies in Arcadia, Ballance said. All face drug-distribution charges. All but one of the suspects was arrested without incident. Ballance said the man who tried to slip out of his house "was met by officers at the window, retreated into the house and got back in bed." Ballance said U.S. marshals; State Police; probation and parole agents; sheriff's deputies from Lincoln, Claiborne, Jackson, Webster and Union parishes; and police officers from Arcadia and Ringgold were also involved in the operation.