`` It is not uncommon for the department to receive threat information and to adjust our resources accordingly , '' Browne said . Suicide bombers could be used against New York transit , government said . Joint FBI , Department of Homeland Security statement says plot unconfirmed . Attack could be planned for holiday season , statement says .
Suicide bombers could be used against New York transit , government said . Joint FBI , Department of Homeland Security statement says plot unconfirmed . Attack could be planned for holiday season , statement says .