BOSTON (AP) – Boston Marathon bombing suspect Dzhokhar Tsarnaev was charged in his hospital room Monday with using a weapon of mass destruction to kill – a crime that carries a possible death sentence.
 
     Tsarnaev, 19, was accused by federal prosecutors of conspiring with his older brother to set off the two pressure-cooker bombs that sprayed shrapnel into the crowd at the finish line last Monday, killing three people and wounding more than 180.
 
     The criminal complaint containing the charges shed no light on the motive for the attack.
 
     Tsarnaev was listed in serious but stable condition at Beth Israel Deaconess Medical Center, unable to speak because of a gunshot wound to the throat. His brother, Tamerlan, 26, died last week in a fierce gunbattle with police.
 
     In outlining the evidence against him in court papers, the FBI said Tsarnaev was seen on surveillance cameras putting a knapsack down on the ground near the site of the second blast and then manipulating a cellphone and lifting it to his ear.