From Inside Edition.

A "mysterious brown substance" was sprayed at Congresswoman Ilhan Omar by a man before he was wrestled to the ground by security. Omar’s staff urged her to leave the town hall event and get checked out at a hospital but she was determined to carry on. According to published reports, the substance was apple cider vinegar. The assailant has been identified as Anthony Kazmierczak. He has two previous DUI convictions and appears to be a supporter of President Donald Trump, according to his Facebook page.