Nine more people have died of their injuries following last week's fire at a Romanian nightclub, bringing the number of deaths to 41, officials say.

Thousands joined a march in the Romanian capital Bucharest, hours after Prime Minister Victor Ponta resigned over a deadly nightclub fire.

Romanian Prime Minister Victor Ponta resigns a day after thousands protest against a nightclub fire that left 32 people dead.

Romania's prime minister decrees three days of mourning starting immediately for the victims of a nightclub fire and stampede.