Romania's pro-EU Prime Minister Marcel Ciolacu on Monday announced his resignation, deepening political turmoil a day after a far-right candidate topped the first round of a tense presidential vote rerun.

Romanian Prime Minister Marcel Ciolacu has resigned, a day after a far-right opposition leader won the first round of the presidential election rerun and his own candidate crashed out of the race. Ciolacu said on Monday that his centre-left Social Democratic Party (PSD) would withdraw from the pro-Western coalition – effectively ending it – while cabinet ministers will stay on in an interim capacity until a new majority emerges after the presidential run-off.