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. Easter Day bomb blasts at three Sri Lankan churches and three luxury hotels killed 138 people and wounded more than 400, hospital and police officials said, following a lull in major attacks since the end of the civil war 10 years ago. REUTERS/Dinuka Liyanawatte

Priests walk into the St. Anthony's Shrine, Kochchikade church after an explosion in Colombo, Sri Lanka April 21, 2019. More than 50 people were killed in St. Sebastian's gothic-style Catholic church in Katuwapitiya, north of Colombo, a police official told Reuters, with pictures showing bodies on the ground, blood on the pews and a destroyed roof. REUTERS/Dinuka Liyanawatte

A relative of a victim of the explosion at St. Anthony's Shrine, Kochchikade church reacts at the police mortuary in Colombo, Sri Lanka April 21, 2019. Media reported 25 people were also killed in an attack on an evangelical church in Batticaloa in Eastern Province. REUTERS/Dinuka Liyanawatte

Sri Lankan military stand guard in front of the St. Anthony's Shrine, Kochchikade church after an explosion in Colombo, Sri Lanka April 21, 2019. The three hotels hit were the Shangri-La Colombo, Kingsbury Hotel in Colombo and the Cinnamon Grand Colombo. It was unclear whether there were any casualties in the hotels. REUTERS/Dinuka Liyanawatte

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. Easter Day bomb blasts at three Sri Lankan churches and three luxury hotels killed 138 people and wounded more than 400, hospital and police officials said, following a lull in major attacks since the end of the civil war 10 years ago. REUTERS/Dinuka Liyanawatte

Buddhist monks stand in front of the St. Anthony's Shrine, Kochchikade church after an explosion in Colombo, Sri Lanka April 21, 2019. Easter Day bomb blasts at three Sri Lankan churches and three luxury hotels killed 138 people and wounded more than 400, hospital and police officials said, following a lull in major attacks since the end of the civil war 10 years ago. REUTERS/Dinuka Liyanawatte