RENO, Nev. (AP) — A flag from a World War II battleship stolen from its display Saturday after people broke into Reno City Hall amid protests over the death of George Floyd was anonymously returned Tuesday.

City spokesman Jon Humbert confirmed the glass display case that held the U.S.S. Reno flag was smashed during demonstrations protesting the death of Floyd, a black man who died after a white officer pressed his knee into Floyd’s neck for minutes, even after he stopped moving.

The protest was peaceful until a smaller group of people were seen defacing the old police headquarters, stealing from downtown businesses and burning an American flag, authorities said.

“It’s an incredible gut punch to take,” Humbert said.

KRNV reports that the flag was inside a package anonymously delivered to the station Tuesday and addressed to journalist Kenzie Margiott with a note in Sharpie that read: “Needed protecting. Looters were flag burning. R.I.P George Floyd.” The tattered flag had a manila tag labeled, “85-55-A USS Reno CL-96."

Margiott said she called the city immediately and the vice mayor arrived within the hour with tears in his eyes.

“I’m really happy and thankful they sent it to you and that we can return it to the city and the citizens of Reno,” Reese said.

The flag was donated to the city in 1946 following a ceremony held at Powning Veterans Memorial Park, the Reno Gazette Journal reported. The men of the U.S.S. Reno were credited with shooting down five enemy airplanes and assisted in the downing of at least two more at Iwo Jima.

Two sailors from Reno served on the U.S.S. Reno: Lt. Henry L. Clayton and Yoman Second Class Glen A. Spoon. The battleship was inactivated on June 1, 1946, and scrapped three years later.