Trump tweets 9/11 photo to Cruz
© Getty Images

Republican presidential front-runner Donald TrumpDonald John TrumpDems flip Wisconsin state Senate seat Sessions: 'We should be like Canada' in how we take in immigrants GOP rep: 'Sheet metal and garbage' everywhere in Haiti MORE on Saturday brought his Twitter attacks against Texas Sen. Ted CruzRafael (Ted) Edward CruzWith religious liberty memo, Trump made America free to be faithful again Interstate compacts aren't the right way to fix occupational licensing laws Texas Dem: ‘I don’t know what to believe’ about what Trump wants for wall MORE to a new level. 

The billionaire real estate tycoon tweeted an image of the World Trade Center in the aftermath of the Sept. 11, 2001, terrorist attacks. 

"Is this the New York that Ted Cruz is taking about & demeaning?" Trump tweeted.

  

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On Tuesday, Cruz slammed Trump for embodying "New York values."

Trump pushed back at Thursday's Republican debate, calling the statement "very insulting."  

Trump has been targeting Cruz with attacks in the days since the debate, calling him a "hypocrite" for his undisclosed bank loans and taunting him over a lawsuit about his citizenship.

He barraged Cruz with Twitter attacks throughout the day Saturday.