The announcement means the country now bears the security agency’s second-highest warning. The decision to issue the warning was made after consultations with security officials and the Foreign Ministry.
On Thursday, Sri Lankan authorities banned drones and unmanned aircraft and continued to set off controlled detonations of suspicious items. Sri Lanka’s civil aviation authority said that it was taking the aircraft measure “in view of the existing security situation in the country.”
The attacks Easter Sunday mainly at churches and hotels killed at least 359 people and wounded 500 more, the government said Wednesday. Most were Sri Lankan but the Foreign Ministry has confirmed 36 foreigners died. The remains of 13 have been repatriated. Fourteen foreigners are unaccounted for, and 12 were still being treated for injuries in Colombo hospitals.
Sri Lankan authorities have blamed a local extremist group, National Towheed Jamaat, whose leader, alternately named Mohammed Zahran or Zahran Hashmi, became known to Muslim leaders three years ago for his incendiary online speeches. On Wednesday, junior defense minister Ruwan Wijewardene said the attackers had broken away from National Towheed Jamaat and another group, which he identified only as “JMI.”