Staff received an alarming e-mail threatening a coordinated pipe-bomb attack at 8:45 am, and moved quickly to clear out the Eastern Parkway museum, according to police.
The threat, sent by email at 9:15, was received by Devorah Halberstam, a political activist and one of the driving forces behind the creation of the Jewish Children's Museum, the largest Jewish children's museum in the country.
The Jewish Children's Museum in New York City was evacuated for a few hours on Thursday after it received a bomb threat by email, police said, the latest in a rash of recent threats to USA and Canadian Jewish organizations.
The building will remain closed today as authorities sweep the building. Additionally, it would double the federal penalty against making fake bomb threats from five years to 10 years.
The museum was built as a memorial to Ari Halberstam, the 16-year-old who was shot and killed when a gunman opened fire on a van of Hasidic students the Brooklyn Bridge in 1994, and Gov. Cuomo noted that the threat flew in the face of everything the institution stands for.More news: Tom Brady endorses meal subscription service
"Whilst we are happy that no one was physically hurt, we are concerned about the antisemitism behind the threats, and the disturbance to our day-to-day lives", the museum said in a statement on Facebook.
Officials swept the space, and no explosives were found.
The governor toured the community center in Whitefish Bay and pledged support, including extra intelligence resources and manpower, calling the bomb threats "a form of domestic terrorism".
The museum's evacuation came as Deputy Commissioner John J. Miller called the person behind the bulk of the threats "your typical coward".
It also states, "We are appalled at extensive desecration of Jewish cemeteries, threats and vandalism against Muslim communities and mosques, and the killing of seven transgender people since the start of 2017, a lot of them trans women of color".