The application was moved by Sanal Kumar, Joint Accounts officer, customer care unit of BSNL Thiruvananthapuram, apprehending arrest in the case.
Justice N K Balakrishnan posted the petition to July 25 for hearing the government.
Police had on July 15 registered a case against some BSNL officials and CPI(M) mouthpiece 'Desabhimani' following the leakage of mobile phone call details of SIT Deputy Superintendent of Police Jossy Cherian.
A case under Sections 70(3), 43 A, 66A1 and 2 of the Information Act had been registered.
Police began a probe after a newspaper report that the officer had misused his official mobile phone by talking to various mediapersons over 3,000 times since the murder for allegedly hatching reports against the CPI(M).
Chandrasekharan, a former CPI-M leader from the party stronghold of Onchiyam in Kozhikode district, was killed at Vallikkad near Vatakara on May 4. He was expelled a few years ago after falling out with the CPI-M leadership and later floated the Revolutionary Marxist Party.
His murder triggered a political storm in the state with Congress and BJP pointing fingers at CPI(M). Several CPI(M) workers have been arrested in connection with the case.
