JAFFREY, N.H. — The police chief in Jaffrey, N.H., has canceled the annual Festival of Fireworks on Saturday after the department received a report threatening violence at the event.

Police Chief William Oswalt said the written report was received Thursday. He said the Jaffrey Chamber of Commerce and the Keene Sentinel received similar threatening communications.

Oswalt said the author indicated a direct threat of violent action that would take place at or near the local airport where the fireworks was scheduled to take place on Saturday.

Oswalt said it is being investigated as a bomb threat. The department is being assisted by the state attorney general’s office, the U.S. Attorney, state police, the FBI, the Bureau of Alcohol, Tobacco, Firearms and Explosives and the Postal Inspector’s office.

“At this early stage of the investigation, we have been unable to develop sufficient facts and information that provide a level of confidence that the security of the event can be assured,” Oswalt said in a statement Friday.

The annual event is a fundraiser for the chamber of commerce. The theme for this year’s show, the 23rd, was “Rock the Stars.” Last year’s theme was “American Spirit,” a special tribute to 9/11.