Investigators and lawmakers briefed by the FBI have said the Tsarnaev brothers — ethnic Chechens from Russia who had lived in the U.S. for about a decade — were motivated by anger over the U.S. wars in Iraq and Afghanistan.
Based on the younger man’s interrogation and other evidence, authorities have said it appears so far that the brothers were radicalized via Islamic jihadi material on the Internet instead of any direct contact with terrorist organizations, but they warned that it is still not certain.
Dzhokhar was interrogated in his hospital room Sunday and Monday over a period of 16 hours without being read his rights to remain silent and have an attorney present. He immediately stopped talking after a magistrate judge and a representative from the U.S. Attorney’s Office entered the room and gave him his Miranda warning, according to a U.S. law enforcement official and others briefed on the interrogation.
Kelly and the mayor said they were briefed on the New York plot on Wednesday night by the task force investigating the Boston bombing.
Rep. Peter King, R-N.Y., said in a CNN interview that the city should have been told earlier.
“Even though this may or may not have been spontaneous, for all we know there could be other conspirators out there, and the city should have been alerted so it could go into its defensive mode,” he said.
Asked about the delay, Bloomberg said: “There’s no reason to think the FBI hides anything. The FBI does what they think is appropriate at the time, and you’ll have to ask them what they found and what the actual details of the interrogation were. We were not there.”
Kelly, citing the interrogations, said that four days after the Boston bombing, the Tsarnaev brothers “planned to travel to Manhattan to detonate their remaining explosives in Times Square.”