The National Gallery of Art in 2013. A noose was found about a block from the museum, at Third Street and Pennsylvania Avenue NW. (Bill O’Leary/The Washington Post)

A noose was found Saturday on the Mall, at least the third in that area in recent weeks.

The noose was hanging from a lamppost near the National Gallery of Art, said Sgt. Anna Rose, spokeswoman for the U.S. Park Police.

She said it was found about 3 p.m. near Third Street and Pennsylvania Avenue NW. The site is near the gallery’s East Building.

One noose was found in a tree May 26 near the Hirshhorn Museum, and another was found May 31 inside the National Museum of African American History and Culture.

The Park Police are investigating, Rose said.