MANHATTAN, New York — A diverse group of Donald Trump supporters gathered outside the New York Midtown Hilton on Tuesday evening at about 6:00 p.m. Eastern Standard Time, and began singing the national anthem, “The Star-Spangled Banner.”

Star-Spangled Banner being sung by diverse group of Americans in front of #HiltonMidtown, where Trump-Pence ElectionNight party’s being held pic.twitter.com/kJdAcUAm0v — Adelle Nazarian (@AdelleNaz) November 8, 2016

The group included blacks, Latinos, whites, and Asians, all of whom had gathered in support of the Republican nominee, apparently in a “flash mob” event. They stood arm-in-arm as they sang together.

Some held campaign signs, including “Drain the Swamp.” One sign said “Hillary cares about black votes, not about black people.”

Almost immediately after singing the “Star-Spangled Banner,” the group dissipated.

Several passersby took photos and videos, and several journalists appeared late on the scene, but no camera crews were visible.

The Trump victory party is scheduled to begin later in the evening. Democratic nominee Hillary Clinton is holding her victory party at the Jacob K. Davits Convention Center, also in Manhattan.

Joel B. Pollak contributed to this report.