Indonesia's volcanology agency said that the Anak Krakatau volcano's alert status had been raised to the second highest level.

Heavy rain lashed fishing villages along the coast, muddying roads and holding up convoys delivering heavy machinery and aid to isolated areas.

Officials said the death toll was 429, with more than 1,400 people injured and at least 128 missing.

Church leaders called on Christians across Indonesia, the world’s most populous Muslim nation, to pray for victims of the tsunami.

The death toll from a tsunami that hit the Indonesian islands of Java and Sumatra after the Anak Krakatau volcano erupted rose to at least 280 on Monday, officials said

In addition to the 222 people killed on Saturday, two major earthquakes hit the region in 2018 alone, killing a combined 2,500 people.

Video footage captured the tsunami hitting the stage during the set of Indonesian rock band Seventeen, who were playing on a west Java beach.

Agency spokesman Sutopo Purwo Nugroho said 222 deaths had been confirmed and at least 843 people were injured. Rescue workers were still trying to access other affected areas.

Scientists say the tsunami could have been caused by undersea landslides from Krakatua erupting 24 minutes earlier.

The Krakatau volcano, which lies in the Sunda Straight between the islands of Java and Sumatra, has seen increased activity since June.