Iain Duncan Smith's former colleague Baroness Altmann has slammed her old boss after he handed in his resignation over disability cuts, claiming he had in fact "championed the reforms he's resigning over".
In a series of tweets the pensions minister also stated that she had been "shocked" by the reason given for Duncan Smith's resignation and suggested he had an ulterior motive for stepping down.
Shocked by IDS news. He championed reforms he now says he's resigning over. Sadly seems all about EU referendum
Makes no sense for IDS to resign in protest at package of measures Gov had already said it would stop and rethink
Fed up being silenced by IDS. Not allowed to talk, controlling words and messages. Hope to have more chance to improve policy now
Iain Duncan Smith tells ITV News' Robert Peston his resignation was intended to push the government into pursuing a fairer welfare policy.
Former Work and Pensions Security accuses government of making 'arbitrary cuts' which he says damages the party and the country.
Conservatives fractures show with claim and counter-claim by ministers from within the DWP about the conduct of Iain Duncan Smith.