He was arrested after being questioned over an alleged conspiracy to assassinate President Maithripala Sirisena and other VVIPs.Activist Namal Kumara had made the revelation to the media over the plot to kill the President, following a telephone conversation he had with Nalaka de Silva. (Colombo Gazette) Former Terrorist Investigations Department head, (DIG) Nalaka de Silva, was today ordered to be further remanded till Nonmember 21st.He was arrested last month by the Criminal Investigations Department (CID) and remanded till today.