Thousands of people demonstrated in the eastern Spanish city of Valencia on Saturday over regional authorities' handling of devastating floods that killed more than 220 people in one of Europe's worst natural disasters for decades, Paralel.Az reports citing Reuters.

In the latest demonstration over the floods, protesters filled the centre of Valencia demanding the resignation of regional government leader Carlos Mazon and chanting "Killers!".

"Our hands are stained with mud, yours with blood," read one banner. Some demonstrators dumped muddy boots outside the council building in protests.

Residents in stricken areas accuse Mazon of issuing an alert too late, at 8 p.m. on Oct. 29, well after water was already pouring into many nearby towns and villages.

The Valencian leader has said he would have issued an earlier alarm earlier if authorities had been notified of the seriousness of the situation by an official water monitoring body. Mazon did not respond to Reuters' requests for comment.

"We want to show our indignation and anger over the poor management of this disaster which has affected so many people," said Anna Oliver, president of Accio Cultural del Pais Valenciano, one of about 30 groups that organised the protest.