Dzhokhar Tsarnaev, the surviving Boston Marathon bombing suspect, was indicted Thursday on multiple counts connected to the April 15 attack on the world's most prominent road race.
The U.S. Attorney's Office for the district of Massachusetts announced on Twitter that Tsarnaev was charged with using a weapon of mass destruction, among numerous other charges.
He was charged with killing four people; presumably, the three people who died at the marathon itself and the shooting death of a Massachusetts Institute of Technology police officer.
In total, Tsarnaev was charged with bombing of a public place, destruction of property, firearms offenses, carjacking and interference with commerce, in addition to the other charges.
Three people died and hundreds more were injured when two pressure cooker bombs, allegedly constructed and placed by Dzhokhar and his older brother, Tamerlan, went off feet from the Boston Marathon's finish line.
Among the killed that day were Krystle Campbell, 29, Lu Lingzi, 23, and Martin Richard, 8.
The brothers were on the loose for days while an unprecedented manhunt was undertaken throughout Boston and the surrounding suburbs. The search came to a head four days after the bombing, when the Tsarnaevs allegedly shot and killed Sean Collier, a 26-year-old MIT police officer.
That shooting touched off a massive chase and gunfight, during which Tamerlan, 26, was killed. His younger brother remained at large for the rest of the day while the city of Boston virtually shut down.
Dzhokhar was eventually captured and arrested that Friday night after hiding in a boat in the Boston suburb of Watertown. According to the indictment, Tsarnaev scrawled anti-American messages along the inside of the boat, including "The U.S. Government is killing our innocent civilians."