FBI agents raided the home on Friday of one of US President Donald Trump's most outspoken critics, his former national security adviser John Bolton.

Trump, asked about the early morning FBI search of Bolton's home, said he was "not a fan" of his former aide but did not know about the raid ahead of time.

"I saw it on television this morning," the president told reporters during a visit to the Kennedy Center in Washington.

"He's sort of a lowlife," Trump said. "He's a very quiet person, except on television if he can say something bad about Trump."

An AFP reporter saw Federal Bureau of Investigation agents entering Bolton's home in the Washington suburb of Bethesda early in the morning.

A police car with flashing lights was stationed outside the house, while journalists and onlookers ga

See Full Page