Tagg Romney (Sam O'Keefe/AP)

HENDERSON, Nev. -- Mitt Romney's eldest son, Tagg, has apologized to President Obama for saying last week that he wanted to punch the president for aggressively challenging his father in their second debate, a Romney campaign official confirmed Tuesday.

In an interview with a North Carolina radio station last week, Tagg Romney said that he wanted to rush the stage at the town hall style debate in New York and "take a swing" at Obama after the president repeatedly accused his father, the Republican nominee, of lying.

"Jump out of your seat and you want to rush down to the stage and take a swing at him," Tagg Romney said in the interview. "But you know you can't do that because, well, first because there's a lot of Secret Service between you and him, but also because that's the nature of the process." He added, "We signed up for it. We've gotta kinda sit there and take our punches and then send them right back the other way."

Tagg Romney apologized to Obama after Monday's final presidential debate in Florida, when both candidates' families came up on the stage. The campaign official said that Tagg Romney told he president he was "just joking" and that Obama accepted the apology.

Romney's apology was first reported by ABC News.