President Donald Trump has hit out at the FBI's deputy director Andrew McCabe after reports emerged that he was planning to retire shortly.

Mr Trump has repeatedly criticised the US intelligence agency, accusing its senior staff of political bias.

Mr McCabe is thought to have told senior FBI officials he was planning to leave the agency in the near future as he is eligible to retire in March.

In a tweet on Saturday evening, Mr Trump accused Mr McCabe of not being impartial during the agency's investigation into Hillary Clinton's emails.

He wrote: "How can FBI Deputy Director Andrew McCabe, the man in charge, along with leakin' James Comey, of the Phony Hillary Clinton investigation (including her 33,000 illegally deleted emails) be given $700,000 for wife's campaign by Clinton Puppets during investigation?"

Mr Trump was referring to donations from the state Democratic party to Mr McCabe's wife Jill, who ran for the Virginia state senate.

Virginia governor Terry McAuliffe's political action committee reportedly made six contributions totalling $467,500 to Mrs McCabe's campaign. The state Democratic party also gave $207,788 in 2015.