Sri Lankan police found 87 bomb detonators at the main bus station in the capital, Colombo, on Monday, a spokesman said, a day after suicide bombers attacked churches and hotels killing 290 people and wounding about 500.
Security forces are carrying out searches across the island to find those behind the bombs. No group has claimed responsibility.
The government authorities have ordered a state of emergency to be introduced from midnight Monday following the deadly attacks, the president's office said.
The special measures are being brought in "to allow the police and the three forces to ensure public security," the statement said, referring to the army, navy and air force.
BDST: 1740 HRS, APR 22, 2019