Donald Trump, the Republican presidential nominee, on Monday threatened a journalist and warned that he would expose her personal life.

In a series of tweets, Trump attacked the intelligence of MSNBC's "Morning Joe" host Mika Brzezinski, saying he would expose the real story of longtime friendship between Brzezinski and her co-host Joe Scarborough.

The Republican presidential nominee, criticises the US media in almost all his speeches. He has also cancelled media credentials of several major US media outlets including The Washington Post.

In May, the 70-year-old Trump called popular US television news anchor Megyn Kelly a "bimbo" and later made peace with her. 

Joe Scarborough, however, remained unfazed by the comments and in an epic response to Trump's tweets, defended his co-star while thanking his 'obsessed fans' for fetching his show the best rating so far. 

(Feature Image Source: AFP)