Officials say the surviving bomb suspect and his brother planned an attack in Times Square.
"Last night we were informed by the FBI that the surviving attacker revealed that New York City was next on their list of targets, " New York City Mayor Michael Bloomberg said Thursday.
New York Police Commissioner Ray Kelly also said the suspects apparently came up with the plan spontaneously after the Boston bombings, as they talked in an SUV they hijacked.
Dzhokhar Tsarnaev initially told authorities that he and his brother, Tamerlan, had talked about going to New York City to "party." Further questioning by investigators revealed that they were planning to use their remaining explosives in Times Square.
Erin Burnett is live at 7pm ET on CNN from Times Square with the latest.