London (CNN) A fire has broken out at Japan's Shuri Castle on the island of Okinawa, local police told CNN on Wednesday.

People in the area are being evacuated, said a police spokesperson, though it is unclear how many evacuees there are or how big the fire is.

The blaze started near the main hall of the UNESCO World Heritage Site, according to the fire department in Naha City, Okinawa Prefecture, Japan's national broadcaster NHK reported

The main building of the Shuri Castle is seen on fire in Naha, Okinawa prefecture, southern Japan, early 31 October 2019.

The castle was completely destroyed during the Battle of Okinawa in 1945, and reconstruction work was only completed in the early 1990s.

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