Republican presidential contender Mitt Romney says his allies should stop running false political attacks.
He says he hasn't seen the attack ads against rival Newt Gingrich. At the same time, however, he's defending their content.
A group run by Romney's allies, Restore Our Future, spent millions of dollars on ads targeting Gingrich in Iowa. Gingrich blames the ads for his disappointing finish in the caucuses.
Romney concedes the group is run by former staffers. Federal law prevents campaigns from coordinating with the so-called Super PACs.
Romney first told Gingrich he hasn't seen the ads but added that any inaccuracies should be removed. Then he defended some of the content, such as linking Gingrich and Nancy Pelosi.
Gingrich warns that his allies would release a 27-minute video examining Romney's business career.