Police continued their search Thursday for a fourth suspect wanted in connection with a shooting spree that killed four people and wounded five others in southern Washington D.C.

Authorities have already charged three other suspects - including a 14-year-old boy - with "first degree murder while armed"' in the twin shootings that took place Tuesday night.

Officers responded to the first shooting about 7:30 p.m. Tuesday on Galveston Street where they found 17-year-old Tavon Nelson wounded. He was pronounced dead shortly afterward, said Metropolitan Police Officer Quintin Peterson.

At the second location - on South Capitol and Brandywine streets - police found eight people who had been shot.

Of the victims, two men - William Jones III, 19, and Devaughn Boyd, 18 - died Wednesday as did a teenage girl, Brishell Jones, 16.

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