Washington (CNN) President Donald Trump phoned a supporter he mocked as overweight during Thursday's New Hampshire rally and left a message, according to a senior administration official.

Trump mocked the man while delivering remarks from the podium during his rally in a Manchester arena, apparently confusing him for a protester.

"That guy's got a serious weight problem," Trump said as the man escorted out several protesters. "Go home. Start exercising."

"Get him out of here please. Got a bigger problem than I do," the President joked. "Got a bigger problem than all of us. Now he goes home and his mom says, 'What the hell have you just done?'"

After the rally, the senior administration official said, Trump got the man's name and contact information from a campaign aide and called him from Air Force One. He left the man a voicemail, the official said.

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