Update June 13:

After authorities found a suspicious package at the National Museum of African American History and Culture on Monday, the Washington, D.C., museum was evacuated, authorities said.

According to the Washington Post, after closing time, around 6:45 p.m., someone found the mysterious package on the second floor, a spokesman for the U.S. Park police said. The museum was immediately evacuated. 

Less than an hour later, a spokesman for D.C. Police said the package was determined not to be a threat. 

This package was found less than two weeks after a noose was discovered in a gallery at the museum. 

Previous June 3:

Another noose was found on federal property in Washington, D.C. This time, one was discovered near the Martin Luther King Jr. Memorial on the National Mall, which makes it all that more insulting.

USA Today is reporting that a piece of rope was found on a bench at the memorial near the National Mall. A visitor later turned it in at the memorial’s bookstore.

This latest incident came after a noose was found at the Smithsonian's Hirschorn Museum on Friday (May 26) and another found days later at the Museum of African American History and Culture the following Wednesday.

Nooses have also been found around the country, including one at a high school in North Carolina, a middle school in Florida and hanging from trees on the campus of American University in D.C. after a Black woman was elected head of the student government.

“The noose has long represented a deplorable act of cowardice and depravity — a symbol of extreme violence for African Americans,” Lonnie Bunch, the director of the African American history museum, told the newspaper.

So far, no one has been found responsible for any of the noose placements.