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Sri Lanka is GMT+5.5
Six near-simultaneous explosions at luxury hotels and churches holding Easter mass
Three churches in Negombo, Batticaloa and Colombo's Kochchikade district are targeted during Easter services and blasts also rock the Shangri-La, Kingsbury and Cinnamon Grand hotels in the country's capital.
Sri Lankan government closes school for two days.
Five hours after the initial attacks, a blast is reported near the zoo in Dehiwala, southern Colombo. This is the seventh explosion.
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An eighth explosion is reported near the Colombo district of Dematagoda during a police raid, killing three officers.
Sri Lankan government shuts down access to major social media messaging services
Sri Lanka's government declares an islandwide curfew from 18:00 local time to 06:00 (12:30 GMT-00:30).
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Reuters reports a petrol bomb attack on a mosque and arson attacks on two shops owned by Muslims in two different parts of the country, citing police.
Nationwide curfew is lifted.
A "homemade" bomb found close to the main airport in the capital, Colombo, has been made safe, police say.
Death toll leaps
At least 290 people, including many foreigners, are now confirmed to have died. More than 500 are injured.
Another curfew is imposed from 20:00 local time to 04:00 23 April as a precautionary measure.
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Police in Colombo have recovered 87 low-explosive detonators from the Bastian Mawatha Private Bus Station in Pettah, the BBC's Azzam Ameen reports.
People flee after new explosion
Video footage from St Anthony's Shrine, shared by Guardian journalist Michael Safi, showed people running from the area in panic. According to BBC Sinhala's Azzam Ameen, the blast happened while "security forces personnel... tried to defuse a newly discovered explosives in a vehicle".
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