Marcellus E. Jackson, 23, and Kier M. Johnson, 21, were arrested Monday in connection with the 2010 slaying of Jamal Coates, D.C. police announced. Investigators count Coates’s killing as among crimes by rival gang members in the U Street NW neighborhood. Coates was shot to death on Sept. 28, 2010, after he attended a funeral for a young woman who was killed earlier that month and whose boyfriend was charged in her death, police said. Among the funeral attendees were members of several Northwest Washington gangs, authorities said.
