Fresh unrest has erupted in the Netherlands against new lockdown rules amid rising Covid-19 cases in Europe.

People hurled fireworks at police and set fire to bicycles in The Hague, one night after protests in Rotterdam turned violent and police opened fire.

Thousands of demonstrators also took to the streets in Austria, Croatia and Italy as anger mounted over new curbs.

The World Health Organization (WHO) said it was "very worried" about rising coronavirus cases on the continent.

Its regional director Dr Hans Kluge told the BBC that unless measures were tightened across Europe, half a million more deaths could be recorded by next spring.

"Covid-19 has become once again the number one cause of mortality in our region," he said, adding "we know what needs to be done" in order to fight the virus - such as getting vaccinated, wearing masks, and using Covid passes.