The Washington Times makes the connection:
Raymond Roseboro was actively in city custody when police say he killed Prince Okorie, who three weeks before his Nov. 30 killing had himself been placed at a DYRS-licensed shelter.
DYRS sources confirmed Mr. Roseboro’s commitment status but were unavailable to provide additional details. Court records indicate he had been arrested in Maryland in July 2009 for theft under $500 and resisting arrest. He was arrested again in Maryland in August 2009 for carrying a handgun. In each case, prosecutors declined to pursue the charges.
He was charged in April in the District with disorderly conduct and failure to obey an officer. The case was disposed of in April after he paid fines.