Republican presidential candidate Donald Trump launched another Twitter attack towards his political rival, Jeb Bush. Trump blamed Bush’s brother, former President George W. Bush for 9/11, and Bush responded.

The attack began when Trump told Bloomberg that “When you talk about George Bush, I mean, say what you want, the World Trade Center came down during his time.” Bush responded and called Trump “pathetic” on Twitter. The Trump Twitter storm followed.

Bush’s campaign manager, Danny Diaz, also got involved.

Many Trump supporters have blown off Trump’s outlandish comments and behaviors. They tally it up as “telling it like it is” and being “unscripted.”

For more on this story, visit CBS News “Trump, Bush spat ramps up over 9/11 comments”