Washington, DC - +Lincoln Memorial Closed+

Washington, DC - The FBI is helping the U.S. Park Police and Washington, D.C. police investigate what is described as the discovery of an "anthrax threat letter" and a suspicious package at the Lincoln Memorial.

The incident started when a strange liquid was found in the women's restroom on the property. Authorities would not confirm what the note said or what the substance may have been.

There are no reports of anyone being sick, nor have any ambulances been called.