A Prince George's County man arrested in the District after he allegedly arranged to receive three kilograms of cocaine from a West Coast drug courier was identified by an FBI agent in federal court yesterday as the head of a drug distribution ring that sold as much as $750,000 a week in cocaine.

Agent Stephen W. Benjamin said the FBI has developed evidence that Allen (Pouchie) Hagler, 29, of the Glenarden area, has purchased at least three kilograms of cocaine a week -- more than 6 1/2 pounds -- for at least six months from a Los Angeles drug supplier. Sources said sales of that amount each week -- totaling nearly $40 million a year -- would make Hagler one of the area's largest drug dealers.

Hagler, who with his father operates Hagler and Sons Waste Removal in Northeast Washington, was one of three men arrested Monday night after a drug courier, working as an FBI informant, delivered four kilograms of cocaine she had picked up in Los Angeles to two men in separate transactions at the Hyatt Regency Hotel on Capitol Hill.

Benjamin said during a preliminary hearing for the three men that Hagler arranged for Anthony Crawford, 28, of 1223 Southview Dr., Oxon Hill, to meet the courier at the Hyatt and pick up the three-kilogram delivery. Crawford, whom Assistant U.S. Attorney William O'Malley described as a junior partner in Hagler's drug operation, was arrested after he left the hotel with the cocaine.

Also arrested was Clinton Edward Dickey, 23, of 6327 Landover Rd., Landover, who was arrested in the hotel room after he received the other kilogram of cocaine from the drug courier, Benjamin testified.

An FBI spokesman in Los Angeles said he knew nothing of the drug distribution operation, which Benjamin testified in court centered on a Bellflower, Calif., drug supplier identified as Michael Williams.

Benjamin said that the FBI has evidence that Hagler received as much as five kilograms in some of his weekly deliveries and that Dickey purchased a kilogram of cocaine from the West Coast drug courier at least 10 times in the past six months. Some of Dickey's transactions were two-kilogram purchases, Benjamin testified.

U.S. Magistrate Patrick J. Attridge ordered Hagler and Dickey held without bond, but set a $50,000 bond for Crawford after his attorney, Thomas Abbenante, argued that Crawford acted more as a "go-fer" for the alleged drug operation. Crawford remained in custody last night.

Benjamin testified that the arrests were made possible by the cooperation of the West Coast drug courier, who agreed to work with the FBI after she was arrested on drug charges in Kansas City, Mo.

The drug distribution conspiracy alleged in the FBI's complaints against the three men began on Oct. 1 when the informant flew from Los Angeles to Washington at Williams' direction to receive payment for a kilogram of cocaine from Dickey, and then flew back to California.

Three days later, the woman went to Williams' home where she picked up the cocaine, and she was then taken to Los Angeles International Airport, Benjamin said. Benjamin flew with her to Washington, where she went to a room at the Hyatt, where the transactions with Hagler and Dickey were videotaped and several telephone calls the woman made to Williams were recorded, Benjamin said.