Romney on Twitter: 'No Legit Reason' Trump Can't Release Tax Returns

During last night's Republican debate in Houston, hosted by CNN, Mitt Romney, the 2012 GOP nominee, took to Twitter and continued to rip front-runner Donald Trump for not publicly releasing his tax returns.

Romney tweeted:

No legit reason @realDonaldTrump can't release returns while being audited, but if scared, release earlier returns no longer under audit.

— Mitt Romney (@MittRomney) February 26, 2016

He added:

.@realDonaldTrump taxes for last 4+ years are still being audited. There are more #bombshells or he would release them.

— Mitt Romney (@MittRomney) February 26, 2016

Trump, however, shot back at Romney by calling him "a fool" for how he handled his own White House run in 2012 and added that he cannot release his tax returns while he is under audit.

"Obviously if I'm getting audited, I'm not going to release a return," the real estate mogul said. "I think people understand that. As soon as the audit is done, I love it."

Romney on Wednesday, called on all candidates to release their past taxes, and added that he thinks there's a "bombshell" in Trump's returns.