The Sri Lankan police have arrested 24 people for links to a series of bombings yesterday that killed at least 290 people, while investigators confirmed that suicide bombers carried out six attacks.
The government analyst "The Willianja" told reporters that suicide bombers carried out three attacks on churches and three others targeted hotels in the capital.
The Department of Defense's government analysts are investigating whether two suicide bombers carried out one of the hotel attacks, meaning seven suicide bombers carried out the attacks.
Police spokesman Ruan Gunasekara said the Criminal Investigation Department was investigating those arrested, all of whom were citizens of Sri Lanka.
The death toll rose overnight after several hospital deaths and several other bodies were found.
On the other hand, the Ministry of Information said the authorities ordered a curfew in the capital Colombo for a second day from 8 pm (1430 GMT) to 4 am on Tuesday (2230 GMT).
Security forces are conducting nationwide searches to find who are behind bombings in churches and hotels that have killed 290 people and wounded about 500. No one has claimed responsibility for the attacks.