Environmental activists have poured black liquid into the famous Trevi Fountain in Rome to protest against the Italian government's investment in fossil fuel.
Media outlets reported that the activists poured liquid containing vegetable charcoal into the fountain, turning the water black on Sunday.
A video distributed by Reuters shows the protesters pouring the black liquid while holding a banner that reads, "We won't pay for fossil."
Police officers rushed to the scene and took them away from the fountain.
The activists said on social media that the government's continued investment in fossil fuel has led to climate change and the recent massive floods in northern Italy.
Italian Prime Minister Giorgia Meloni had cut short her attendance at the Group of Seven summit in Japan to lead the response to the floods triggered by heavy rain.
She visited disaster-hit regions on Sunday.
Rome Mayor Roberto Gualtieri said 300 kiloliters of water have to be discarded to clean up the fountain.
He tweeted, "Enough of these absurd attacks on our artistic heritage."