At least 43 people were killed after a tsunami, triggered by undersea landslides from Anak Krakatau, hit the coast of Indonesia's Sunda Strait on Saturday.

Another 600 people were hurt and dozens of buildings were damaged on Saturday night, the National Disaster Management Agency said.

The Meteorology and Geophysics agency in a separate statement said it could have been caused by undersea landslides from Anak Krakatau, a volcanic island formed over years from the Krakatau volcano, which last erupted in October.

Andersen, a Norwegian professional volcano photographer, said he had rushed to the hotel where his family were staying, and they later went to a higher ground in a forest.

“I had to run, as the wave passed the beach and landed 15-20m (meters) inland,” Oystein Lund Andersen wrote on Facebook. He said he was taking pictures of the volcano when he suddenly saw a big wave coming towards him.

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The Sunda Strait between the islands of Java and Sumatra connects the Java Sea to the Indian Ocean.

Footage posted by the head of the disaster management agency showed the aftermath of flooded streets and an overturned car.

In September, at least 832 people were killed by a quake and tsunami that hit the city of Palu on the island of Sulawesi, which is just east of Borneo.