Former President Donald Trump
Former President Donald Trump waves to the crowd outside Trump Tower on Tuesday. Red marks are clearly visible on his hand.

Mysterious marks were visible on one of former President Donald Trump's hands on Wednesday as he left his New York residence to attend a nearby trial.

Multiple photos show Trump waving to the press as he left Trump Tower Wednesday morning with small red dots. It's not clear what the cause of the odd splotches could be. A spokesperson for the former president's campaign did not immediately respond to Business Insider's request for comment.

Trump did not appear to have the dots on his hand on Tuesday evening, based on photos of his campaign stop in Atkinson, New Hampshire.