Donald Trump hit back on Twitter late Friday after Jeb Bush attacked him for saying that former President George W. Bush shared some responsibility for the 9/11 terrorist attacks.
The Republican presidential front-runner let loose after a rally outside Boston:
The latest round between the two contenders began earlier Friday, when Trump told Bloomberg TV that President Bush shared some blame for the 9/11 attacks.
Nearly 3,000 Americans died in the assaults on the World Trade Center, the Pentagon outside Washington and in a plane crash in Shanksville, Pa.
"When you talk about George Bush, I mean, say what you want, the World Trade Center came down during his time," Trump said.
Bloomberg anchor Stephanie Ruhle then interjected, "Hold on, you can't blame George Bush for that."
Trump, however, stood by his comments.
"He was president, OK? ... Blame him, or don't blame him, but he was president," the developer said. "The World Trade Center came down during his reign."
That prompted Jeb Bush, the former Florida governor who was in the Tallahassee Capitol the day of the attacks, to bash Trump:
At the rally, in Tyngsborough, northwest of Boston, Trump promised a tough national defense, repeal of Obamacare, strict enforcement of immigration laws and improved treatment of veterans.
He insisted that polls showed that he continues to lead the Republican field and ridiculed critics who pounced on a slight drop in some surveys.
Trump told the crowd that he would win Massachusetts because Democrats are "sick and tired of watching our country lose."
The Associated Press contributed to this report.
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