Martin McGuinness calls on Arlene Foster to ‘step aside’

Martin McguinnesNorthern Ireland's deputy first minister Martin McGuinness has called on the first minister to "step aside" to allow an investigation into a controversial green energy scheme.

Arlene Foster set up the Renewable Heat Incentive when she was enterprise minister.

Opposition parties claim the government now faces a 400 million pound bill after overspending on the project.