Man arrested after spraying unknown substance on Rep. Ilhan Omar at Minneapolis town hall

A man sprayed an unknown substance on Democratic U.S. Rep. Ilhan Omar and was tackled to the ground Tuesday during a town hall in Minneapolis, where tensions over federal immigration enforcement have come to a head after agents fatally shot an intensive care nurse and a mother of three this month.

The audience cheered as the man was pinned down and his arms were tied behind his back. In video of the incident, someone in the crowd can be heard saying, "Oh my god, he sprayed something on her."