US Republican presidential front-runner Donald Trump on Saturday claimed a man who was removed by Secret Service agents at a rally in Ohio after he charged the stage "probably" had ties to Islamic State.Speaking at a campaign event in Kansas City, Missouri, Trump said, "This was a guy that was looking to do harm. So the judge let him go. And then one of my people said wow. They found his name and it was probably ISIS or ISIS related."The incident happened Saturday morning as the New York billionaire spoke at a rally at Dayton International Airport.