A museum in Lower Manhattan dedicated to Jewish history and tradition had a Confederate flag tied to its entrance on Friday morning, according to museum officials. The NYPD's detective division is investigating the incident, with the state now offering assistance as well.

"This is an atrocious attack on our community and on our institution and must be met with the swift and forceful response by law enforcement," Jack Kliger, president of the Museum of Jewish Heritage – A Living Memorial to the Holocaust, where the flag was found, said in a statement. "The Confederate flag is a potent symbol of white supremacy, as evidenced by the events at the U.S. Capitol this week. Such hate has now arrived at our doorstep, just steps away from a train car which once transported Jews to the Auschwitz death camp. These horrific acts of emboldened anti-Semitism must end now.”

The train car is part of the museum's exhibit on Auschwitz, where 1 million Jews were killed during World War II.

The Holocaust, and legacy of Adolf Hitler and Nazis, was invoked when supporters of President Donald Trump violently breached the U.S. Capitol on Wednesday. Not only were Confederate flags on display—and trotted around the halls of the Capitol—there were Trump supporters wearing shirts that said "6MWE," which stands for "6 Million Weren't Enough," referring to the 6 million Jews murdered by Nazis in the Holocausts, and "Camp Auschwitz."

One incoming member of Congress, Republican Rep. Mary Miller of Illinois, even quoted Hitler to the supporters at a rally on Tuesday, saying, "Hitler was right on one thing. He said, ’Whoever has the youth has the future.’"

Her remarks were denounced by fellow Illinois lawmakers, Republican and Democratic alike; Miller apologized, insisting she supports Israel.

On Friday, Governor Andrew Cuomo remarked on the Washington D.C. riot, which followed a rally with Trump, which he said was full of unprecedented "vitriol and hate."

"You look at what these people were celebrating—it was racism. It was ant-Semitism, Camp Auschwitz. How disgusting a statement. 'Six million weren't enough.' How repugnant and repulsive a statement. Confederate flag," he said. Then he referred to the 2017 white nationalist gathering in Virginia. "This was KKK in Charlottesville who didn't wear a mask because they felt liberated in their hate by President Trump."

The governor later directed the New York Police's Hate Crimes Task Form to assist in the investigation.

"The Confederate flag is a repulsive symbol of hate, and I am disgusted by reports that someone attempted to intimidate our Jewish neighbors by tying one to the door of the Museum of Jewish Heritage in New York City," Cuomo said in a statement. "As we saw earlier this week when hate-filled mobs stormed our nation's Capitol, violent white supremacists have been emboldened by Donald Trump's divisive rhetoric -- but we will not let them succeed. In New York, we will always defend against crimes that target New Yorkers for who they are or what they believe."

The raid on the Capitol has left five people dead. Four people died on Wednesday, including a woman who was shot by a law enforcement agent when she tried to breach the House of Representatives' Speaker's Lobby. A U.S. Capitol Police officer died after being hospitalized from injuries sustained during the incident; one report said an extremist hit him on the head with a fire extinguisher.