Italy is set to declare a state of emergency in Venice after the Italian city was engulfed by 1.87m (6ft) high water levels, flooding its historic basilica and cutting power to homes.

More than 80% of the city, a Unesco world heritage site, was under water when tides were at their highest.

Italy's Prime Minister Giuseppe Conte described the flooding as "a blow to the heart of our country".

He said the government would now act quickly to provide funds and resources.