The Tsarnaev brothers accused of planting two bombs that went off at the Boston Marathon on April 15 planned a second bomb attack on New York's Time Square, New York City Mayor Michael Bloomberg confirmed Thursday.

Tamerlan and Dzhokhar Tsarnaev hijacked a car and its driver in Boston on April 18 with the intent of driving to New York with bombs, and detonating them in Times Square. Their plan ultimately failed when they were involved in a shootout with police soon after, which left Tamerlan, 26, dead and Dzhokhar, 19, severely wounded. The younger brother was found the next day and is currently being held at a Boston medical center.

"Last night we were informed by the FBI that the surviving attacker revealed that New York City was next on their list of targets," Bloomberg said at New York City Hall. "He and his older brother intended to drive to New York and detonate those explosives in Times Square."

Attorney for the Tsarnaev's, Miriam Conrad, declined to comment on Thursday on whether Dzhokhar was still talking with investigators. He was charged Monday from his hospital bed for using a weapon of mass destruction with the intent to kill. The charges could carry the death penalty and Dzhokhar was assigned three federal public defenders. A probable cause hearing was set for May 30 in U.S. District Court.

Anzor Tsarnaev, Tamerlan and Dzhkohar's father, is expected to arrive in the United States in the coming days traveling from Dagestan, according to CNN. He told reporters he would help officials any way they could with their ongoing investigation into the Boston Marathon bombings, which killed three and injured 264 others.

"I am going to the United States. I want to say that I am going there to see my son, to bury the older one. I don't have any bad intentions. I don't plan to blow up anything," Anzor told reporters, according to Reuters.