Arlene Foster questions existence of letter at centre of DUP coup First Minister Arlene Foster at the Strand Centre Cinema in east Belfast to mark the reopening of indoor arts venues, after the latest easing of the Covid-19 restrictions. Picture by Liam McBurney/PA Wire Rebecca Black, PA 24 May, 2021 17:16 Outgoing DUP leader Arlene Foster has questioned the existence of a letter at the centre of an internal party coup against her. The letter reportedly signalled no confidence in Ms Foster’s leadership and was said to have been signed by a majority of the party’s senior elected representatives. It led to Ms Foster announcing her intention to resign as DUP leader and first minister.