At Clinton campaign offices in Rochester, New Hampshire, a man wearing what looks to be a bomb has taken two volunteers as hostages.
WNBC-TV in New York quoted an unidentified law enforcement source as saying the man wanted to speak with Clinton.
Clinton, who was in Washington, D.C., canceled a speaking engagement and was meeting with staffers.
She did not respond publicly to the reported demands, but her campaign issued this statement: “We are in close contact with state and local authorities and are acting at their direction. We will release additional details as appropriate.”