BOSTON (AP) — Federal prosecutors are going to seek the death penalty against accused Boston Marathon bomber Dzhokhar Tsarnaev (joh-HAHR’ tsahr-NEYE’-ehv). Two blasts killed three people and wounded more than 260 others. Seventeen of the 30 federal charges against him carry a possible death penalty — including the charge of using a weapon of mass destruction to kill. Tsarnaev has pleaded not guilty. No trial date has been set.