Two mass shooting incidents accounted for ten of the dozen injured, police said.
Six people (three men and three women) were shot and wounded in the unit block of N St. SW on Sunday morning, while three men and a child were injured around midnight on Friday in the Bloomingdale neighborhood in northeast Washington.
The remaining shooting cases involved a carjacking in which a man was shot and wounded about 2:45 a.m. Sunday in the 2300 block of Hartford Street SE, and another solo-shooting in Southeast about 1 a.m. Saturday in the 2000 block of Savannah Terrace.
None of the wounded dozen people appeared to have suffered life-threatening injuries.
No arrests were reported in any of the incidents, although police said they were searching for two men in a light-colored station wagon in connection with the Bloomingdale shooting.