Sirisena on Wednesday asked for removal of Defence Secretary Hemasiri Fernando and the Inspector General of Police (IGP) Pujith Jayasundara over the mishandling of the intelligence reports in the lead up to Easter Sunday's bombings.
This comes after the government indicated that heads will have to roll at the security level for failing to act on the tip-offs.
As per reports , the top officials of the country have acknowledged that ahead of the attacks Sri Lanka had received intelligence about possible terror strike, but both President Maithripala Sirisena and Prime Minister Ranil Wickremesinghe have said that they did not receive the information.
While addressing a press conference, State Minister of Defence Ruwan Wijewardene accepted that there has been major lapses in the security arrangements.
He said that the government have to take the responsibility. The President is planning to make some changes in the security establishments.
President Sirisena on Tuesday assured the nation that he would take steps to curtail terrorism and bring back normalcy swiftly. He said that he will make some immediate changes in the high security positions as there was negligence in carrying out responsibilities.
On Wednesday, Sri Lanka's opposition MP Wijedasa Rajapaksa told a press conference that he forwarded a letter to the President urging him to arrest both men.
Sirisea said on Tuesday that he had no prior knowledge of the advance warning about the suicide bombings which are claimed by the Islamic State.