Boris Johnson has told MPs he is "sticking by" Home Secretary Priti Patel, following further allegations of bullying against her.
Claims she mistreated staff would "of course" be investigated, he said at Prime Minister's Questions.
But he hailed Ms Patel as an "outstanding" home secretary who was "delivering change".
The Cabinet Office is investigating several allegations about Ms Patel's behaviour, which she denies.
The home secretary, who was sat next to Mr Johnson at PMQs, has not publicly commented on the allegations.
