Pope Francis has prayed for the dead, the missing and the homeless in the tsunami that struck Indonesia.

Francis told tourists and pilgrims in St. Peter's Square on Sunday that his thoughts were with Indonesia's people, ``struck by violent natural calamities,'' and said he was spiritually close to those left homeless or otherwise suffering.

At least 222 people were killed by the tsunami, which swamped hotels, houses and concertgoers at a beachside venue in the Southeast Asian nation.

The pope also appealed for people to show solidarity, and for the international community to lend support, for those affected by the disaster.

Indonesia's disaster management agency says the death toll from a tsunami believed to be triggered by a volcanic eruption has climbed to 222, with 843 others injured and 28 missing.

Agency spokesman Sutopo Purwo Nugroho says those numbers may still rise since not all affected areas have been reached.