Sri Lankan authorities swept up more people, including foreigners, for questioning on Thursday as they probed deeper into the Easter Sunday bombings, which killed 359 people in potentially the deadliest operation claimed by Islamic State.
Police said an Egyptian and several Pakistanis were among those detained overnight, although there was no immediate suggestion they had direct links to the attacks on three churches and four hotels that also wounded about 500 people.
An explosion occurred in a town east of the Sri Lankan capital, Colombo, on Thursday but there were no casualties, a police spokesman said, adding it was not a controlled explosion like other blasts in recent days and was being investigated.
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