The enquiry cell said an anonymous person had called the Chief Minister’s residence at 12.57 a.m. A detailed investigation by the cell’s team led by Assistant Commissioner N. Vinaya Kumaran Nair found that the caller had used a web-based voice over internet protocol (VOIP) telephone service provided by a firm in the Netherlands. The police said a person had called Ibrahim (P.V. House, Chengala Panchayat, VI/325) in Kasaragod district from the same VOIP number several times.
Earlier, the Museum police had registered a case (470/2009) under Section 507 of the IPC on the basis of a complaint filed by the Chief Minister’s Office.