The report was submitted to chief secretary Sudripta Roy by the team from the state forensic laboratory, Junga. The team was constituted by the home department on Roy's orders.
The report is likely to be discussed when the state cabinet meets on Saturday.
According to sources, the phones were intercepted by the technical wing of the anti-corruption and vigilance bureau. The four computers that were seized from the ACVB office along with eight other computers seized from the police crime investigation department's headquarters contain phone records of 500 numbers. These numbers belong to bureaucrats, builders and police officials. Most of these phones were tapped to snoop on criminal activities. The data purportedly contains conversation of certain bureaucrats with realtors.