The high court, however, allowed the CBI's plea seeking time to complete the probe and listed the matter for further hearing on October 25.
"One year has passed. When are you going to complete the preliminary enquiry (PE)? What have you done? This is purely record and documentation," a bench of Acting Chief Justice Gita Mittal and Justice C Hari Shankar said.
Bhushan cited a Supreme Court judgement and said CBI has registered a PE and have kept it pending for a year. He said they have to register an FIR and conduct the investigation.
CBI standing counsel Sanjeev Bhandhari submitted that in such cases, PE is required to be registered and the agency will place the outcome of the enquiry before the court on the next date.
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The petition claimed that in 2011, BSNL had invited tender for north, south and east zones for 14.37 million GSM mobile telephone lines on a turnkey basis and following a transparent competitive bidding process, M/s ZTE emerged as the successful bidder for all three zones at a cost of Rs 4,204.85 crore.
The plea alleged that in its tender, BSNL had prescribed eight milestones for releasing payments, according to which only 50 per cent payment was payable upto delivery stage and the balance to be released in stages on installation and commissioning.
The plea claimed that certain officials of BSNL and ZTE entered into a conspiracy to release undue payment of 95.10 per cent "illegitimately for all such uninstalled equipment".
"It is apparent that the respondent (CBI) is not taking any action on the complaint filed by the petitioner for some unknown reasons even in such a serious matter where hundreds of crores of rupees have been released illegitimately in criminal conspiracy between officials of BSNL and a Chinese contractor by forging documents in a contract worth Rs 4,204.85 crore," the petitioner alleged.