Sir Alan Duncan has quit as a Foreign Office minister in protest against a possible Boris Johnson victory in the Conservative leadership race.

Axar.az reports citing BBC that Chancellor Philip Hammond and Justice Secretary David Gauke have already said they intend to resign if he wins.

Political editor Norman Smith said they could not stomach the prospect of a no-deal Brexit which they think Johnson could oversee.

Voting for the leader closes later with the winner to be revealed on Tuesday.

The successor to Theresa May - either Johnson or his rival Jeremy Hunt - will enter Downing Street on Wednesday.

Alan Duncan has long been a vocal critical of ex-Foreign Secretary Johnson. He once described him as a "circus act" and claimed he served as his "pooper scooper" at the Foreign Office, clearing up mess created by Johnson.

Most recently, Alan Duncan attacked his former boss over the resignation of Kim Darroch, the British ambassador to the US.