President Donald Trump slammed fired FBI director James Comey in a Monday tweet, returning to his claim that the probe by special counsel Robert Mueller into Russian interference in the 2016 election is a "witch hunt."
"Mueller is Comey’s best friend," Trump said in the tweet.
The president also blasted others involved in the Mueller probe Sunday, including FBI agent Peter Strzok, calling him a "sick loser" in a Sunday tweet.
Strzok is an FBI agent at the center of a test messaging controversy in which he told colleague Lisa Page that "We’ll stop it," regarding Trump becoming president.