A day after conducting searches, the Central Bureau of Investigation (CBI) is grilling senior police officer of Karnataka Police, Alok Kumar in connection to the illegal phone tapping case.

Alok Kumar is currently serving as Additional Director General (ADG) of Karnataka Police.

Sources told India Today TV that the questioning of Alok Kumar is being conducted at the Kumara Krupa Guest House by a team of CBI officials.

The probe agency claimed that the questioning is based on the evidence and facts gathered by the interrogators during the course of investigation.

The probe agency also recorded a statement of an ACP (Assistant Commissioner of Police) who has provided vital information in regards to several police officers including Alok Kumar.

CBI on Thursday carried out searches at multiple locations in Bengaluru including residence and office of former Police Commisioner Alok Kumar in connection with illegal phone tapping of several politicians and officers of Karnataka.

An FIR was lodged by the CBI in August last year after the request from Karnataka government. The phone-tapping controversy came to light when an alleged phone conversation was leaked to the media, in which an IPS officer was named.

The Karnataka government while requesting CBI probe maintained that they "intend to inquire and investigate into such lapses".

Names of senior Congress leader Ahmed Patel and former PWD Minister HD Revanna of the JD(S) also came out in the leaked phone tapes.

Before CBI, the case was being investigated by the Cyber Crime Police Station of Bangalore under section 72 of the Indian Technology Act, 2000 and Section 26 of Indian Telegraph Act, 1885.