'This is witness intimidation': Internet gasps after Trump threatens Michael Cohen's father-in-law in angry tweet

President Donald Trump on Friday issued a new threat against the father-in-law of his former "fixer" over Twitter.

Reacting to reports that former personal attorney Michael Cohen has told investigators that Trump instructed him to lie to Congress about the Trump Tower Moscow project, the president angrily wrote that Cohen was "lying to reduce his jail time!"

Even more ominously, the president added that people should "watch [Cohen's] father-in-law," whom the president has in the past insinuated could be prosecuted for assorted crimes.

Trump's threat against Cohen's father-in-law drew immediate gasps across the internet -- with some reporters calling it a textbook example of witness intimidation.

Check out some of the reactions below.