A 23-year-old Washington man, free on a $2,500 bond in connection with the January slaying of an off-duty U.S. Secret Service officer was arrested and charged yesterday in the December murder of a Korean grocer.

D.C. Supreme Court Judge Paul F. McArdle yesterday ordered that Ulysses Jones Jr. be held in jail without bond pending a court hearing Wednesday. McArdle granted a prosecution request for a "preventive detention" hearing to determine if Jones' release would pose a danger to the community.

Jones was arrested at his home, 305 17th St. SE.

The Korean grocer, Boo Yeol Park, 50, was shot once during a holdup on Dec. 13 at 7 p.m. by one of two armed men at the Fort Dunn Market at 4686 Martin Luther King Ave. SW. The second suspect has not been arrested.

The off-duty secret service agent, George Irving Coaxum, 32, was shot several times on Jan. 11 at about 2:30 a.m. during a robbery outside Chuck's Bar and Grill at 1432 Irving St. NW.

Nine hours after that shooting, police arrested two men for murder, but the U.S. Attorney's office later dropped the charges.

Jones and a second man, Ricky Darnell Bryant, 21, were later charged with Coaxum's murder. Bryant was in the D.C. Jail at the time he was charged. Jones appeared in Superior Court on Feb. 5 before Judge Shellie F. Bowers who placed Jones on the money bond, according to court records.