A federal magistrate yesterday set a $10,000 bond for a 30-year-old Southeast Washington man who is alleged by D.C. police to be a major drug trafficker.

The suspect, John D. Brock Jr. of 4264 Massachusetts Ave. SE, was arrested Wednesday after police raided the Massachusetts Avenue address and two other locations and seized $60,000 worth of heroin and cocaine, $100,000 worth of jewelry and 11 handguns.

Brock, who is charged with possession with intent to distribute heroin, was released from custody shortly after his arrest when he put up 10 percent of a $2,500 bond. Brock reported to U.S. District Court yesterday where Magistrate Lawrence S. Margolis increased his bond to $10,000. Brock subsequently was released on the higher bond.

Assistant U.S. Attorney William J. O'Malley asked Margolis to set a $100,000 bond because Brock has the "means and motivation" to flee from further prosecution. Brock's lawyer, Kenneth M. Robinson, said that he had represented Brock in other matters and that his client had not missed required court appearances. Brock, who told court officials that he runs a limousine service, owns seven cars, including a Rolls-Royce and a Mercedes-Benz, police said.

Margolis also increased the bond of another suspect, Maria Lopez, 20, from $2,500 to $5,000. Lopez, who is also charged with possession with intent to distribute heroin, made the bond, officials said. Lopez gave officials an address at 1116 Orren St. NE and another at 1902 11th St. NW, which was one of the places raided by police Wednesday.

Two other suspects, Mary C. Sales, 44, who is charged with possession with intent to distribute heroin, and Brock's wife, Betty A. Perry, 27, who is charged with possession of heroin, remained free on $2,500 bond each.