Again in September 2015 he stood aside to allow Arlene Foster to become acting First Minister after his bid to adjourn the assembly was rejected. Robinson's action was a response to a murder carried out by the IRA which was linked to a party in the Northern Ireland Executive. Robinson resumed his duties on 20 October 2015. On 19 November 2015, he announced that he would be stepping down as First Minister and as leader of the DUP. Robinson subsequently stepped down as First Minister on 11 January 2016 and has now fully retired.