Gerry Adams: Arlene Foster should 'do the right thing'; SF warns of Stormont crisis

Sinn Féin has warned a collapse of the powersharing institutions at Stormont is an option if First Minister Arlene Foster refuses to stand down to allow a probe into her handling of a botched green energy scheme.

Democratic Unionist leader Mrs Foster has steadfastly rejected calls to step aside amid an "ash for cash" crisis that has engulfed the devolved administration in Belfast.