It is reported by TV News First.
"Secretary of the Defense Ministry Hemasiri Fernando resigned," - said in a statement.
Earlier, the President of Sri Lanka Maitripala Sirisen asked the secretary of the Ministry of Defense, the head of the police to resign.
On April 21, a series of explosions occurred in temples and hotels in Sri Lanka, which resulted in the death of 359 people.
UN Secretary-General António Guterres offered Sri Lanka assistance to the organization’s counter-terrorism agency in investigating a series of explosions in the country on April 21.