Watch: US National Anthem Heckled at London NBA Game

A heckler yelled out “Leave Greenland alone” during the singing of the U.S. national anthem before an NBA game in London on Sunday.

“Vanessa Williams was performing the Star-Spangled Banner before the Memphis Grizzlies faced the Orlando Magic at the O2 Arena when she was interrupted by the heckle. The intervention drew a round of applause and cheers from sections of the crowd,” The Guardian reported.

The Grammy-nominated singer and actress was well into the tune as she sang, “gave proof through the night that our flag was still there,” when the heckler screamed, “Leave Greenland alone!”

A smattering of applause followed, which soon picked up to loud applause and cheers from many in the audience.

NBA game in London. Someone screams “Leave Greenland