Anak Krakatau ash has spread to the Thousand Islands, prompting authorities to urge residents to wear masks and stay alert.

Volcanic ash from Mt Anak Krakatau disrupts air travel in Southeast Asia, grounding flights at Jakarta's international airport.

Ashfall from Mount Anak Krakatau’s eruption has disrupted hundreds of flights over the weekend, sending volcanic ash across parts of Java and Sumatra and adding pressure on a…