Authorities lifted a curfew in Sri Lanka on Monday (April 22), a day after a string of bombings at churches and luxury hotels across the Indian Ocean island killed 290 people and wounded about 500, but there were warnings more attacks were possible.

Security personnel inspect the interior of St Sebastian's Church in Negombo on April 22, 2019, a day after the church was hit in series of bomb blasts targeting churches and luxury hotels in Sri Lanka. Photo: AFP

Crime scene officials inspect the explosion area at Shangri-La hotel in Colombo, Sri Lanka April 21, 2019. Photo: Reuters

A man cries as he prays outside the St Anthony's Shrine in Colombo on April 22, 2019, a day after the building was hit as part of a series of bomb blasts targeting churches and luxury hotels in Sri Lanka. Photo: AFP

Relatives of victims react at a police mortuary, after bomb blasts ripped through churches and luxury hotels on Easter, in Colombo, Sri Lanka April 22, 2019. Photo: Reuters

Blood is seen on a pair of shoes at St Sebastian Catholic Church, after bomb blasts ripped through churches and luxury hotels on Easter, in Negambo, Sri Lanka April 22, 2019. Photo: Reuters

Sri Lankan military officials stand guard in front of the St. Anthony's Shrine, Kochchikade church after an explosion in Colombo, Sri Lanka April 21, 2019. Photo: Reuters

A statue of Virgin Mary broken in two parts is seen in front of the St Anthony's Shrine, Kochchikade church after an explosion in Colombo, Sri Lanka April 21, 2019. Photo: Reuters