The Niagara Falls Air Reserve Station received a suspicious package this afternoon, base officials said, triggering emergency measures at the base.

The package was received at 2 p.m. by a civilian mail carrier and had no return address. The package was isolated, officials said, and any base personnel who came in contact with it were quarantined.

Federal and state law enforcement has been called in to help determine the nature of the package, which will likely be taken away from the base to be evaluated. A local fire crew was also called to the scene.