On April 30, 2019, Ambassador Jayatilleka, accompanied by Mr. Dulmith Waruna, First Secretary of the Embassy of Sri Lanka, attended a meeting at the Ministry of Internal Affairs of Russia, organized by the Russian Foreign Ministry for the Heads and staff members of the Diplomatic Missions in Moscow. The meeting was opened by Hon. H. E. Sergei Ryabkov, Deputy Minister of Foreign Affairs, who spoke on common tasks of the Russian MFA and MIA and on international cooperation.

On April 26, 2019 H. E. Dr. Dayan Jayatilleka, Ambassador of Sri Lanka in Russia, and an official Sri Lankan delegation, comprised of Mr. N.K.G.K Nammawatta, Secretary, State Ministry of Defence of Sri Lanka, and Mr. Wimal S.K. Liyanagama, Senior Assistant Secretary, Defence, held a meeting with Deputy Director of the Federal Service for Military and Technical Cooperation (FSMTC) Mr. Mikhail Petukhov, as well as other officials of the authority and a representative of the JSC Rosoboronexport.

Minister of Defence of Russia Sergey Shoygu shared his view on the terrorist acts, carried out in Sri Lanka, and offered condolences during his speech at the opening ceremony of the VIII Moscow Conference on International Security. 

On April 24, 2019 H. E. Dr. Dayan Jayatilleka, Sri Lankan Ambassador to Russia, was a panelist at the Special Session No. 1, devoted to ""Color" Revolutions and "Hybrid" Warfare: General and Specific Features" in the framework of the VIII Moscow Conference on International Security.

During the session, the attendees observed a minute of silence in remembrance of the victims of bomb explosions that occurred in Sri Lanka on Easter Sunday, April 21.