A gunman was arrested near Donald Trump’s rally in Houston. He was not actually at the rally, but was found on the fourth floor of a parking garage nearby, with the gun. It’s unclear how he was discovered or if he posed a threat. You can see a video of his arrest above.

Here’s what you need to know.

The gunman was wearing a white “Donald Trump” shirt when he was arrested. He was found in the fourth floor of a parking garage at the Woodlands Waterway Marriott Hotel & Convention Center, where Donald Trump was scheduled to speak at his rally.

One rally attendee got a photo of the suspect as police were taking him away:

Police have not yet released the man’s name, Dallas Morning News reported, and it’s uncertain if he was threatening the rally itself. An pro-Trump blog called “Regated” said that one of their own reporters had parked in the fourth floor of the same garage and hadn’t noticed anything suspicious.