The death toll in Sri Lanka has risen to 290 after a wave of blasts hit churches and luxury hotels across the country on Sunday, said, local officials.
Concise News understands that 24 people had been arrested by the police but it is not yet known who carried out the attacks.
About 500 people are injured and at least 35 foreigners are among the dead.
The Easter Sunday bombings were the deadliest violence Sri Lanka has witnessed since the end of the country’s civil war in 2009.
Late on Sunday, Sri Lankan Prime Minister Ranil Wickremesinghe said security services had been “aware of information” of possible attacks but that the information had not been acted upon.
A curfew is to be imposed from 20:00 (14:30 GMT) until 04:00 on Tuesday, the government said.
The first reports of explosions came at about 08:45 local time with six blasts reported within a small space of time.
Three churches in Negombo, Batticaloa and Colombo’s Kochchikade district were targeted during Easter services.
Blasts also rocked the Shangri-La, Kingsbury and Cinnamon Grand hotels in the country’s capital.
All the attacks were carried out by suicide bombers, reports said.
Police then carried out raids on two addresses and there were explosions at both.
One was in Dehiwala, southern Colombo, and the other was near the Colombo district of Dematagoda in which three officers were killed.
The air force said an improvised explosive device – a 6ft-long [1.8m] plastic pipe packed with explosives – had been found and disposed of near the country’s main airport in the capital, Colombo.
Police have not provided a breakdown of how many were killed and wounded at each location.
The government has urged people not to speculate about who could be behind the attacks and restricted access to social media in the aftermath of the bombings.
No information has been given on the identity of the 24 people arrested.
Addressing reports that officials had had prior intelligence of forthcoming attacks, Mr Wickremesinghe said: “We must look into why adequate precautions were not taken. Neither I nor the ministers were kept informed.”