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NEW DELHI: The Centre on Thursday informed the Supreme Court that it will extend till March 31 next year the deadline fixed for mandatory linking of Aadhaar for availing various services and welfare schemes.

A notification to this effect will be issued on Friday, the government told the top court.

Petitioners who have challenged the validity of Aadhaar on the ground that it violates right to privacy urged the top court for an early hearing to decide whether Aadhaar should be stayed.

CJI Dipak Misra told petitioners that a five-judge constitution bench may sit next week to decide their plea for interim stay on Aadhaar.

Attorney general KK Venugopal said there cannot be a stay on Aadhaar as it has gone on for years. He said the Centre is ready to argue the matter.

The attorney general, however, made it clear that February 6 next year would remain the deadline for linking Aadhaar for availing uninterrupted mobile services as it had been mandated by the apex court.

Senior advocate Shyam Divan, appearing for those who are opposed to Aadhaar scheme told the bench, also comprising Justices AM Khanwilkar and DY Chandrachud, that the central government should give an undertaking that no coercive steps would be taken against those fail to link their Aadhaar with various services.

The apex court on October 30 had said that a Constitution Bench would commence hearing on the clutch of petitions against Aadhaar scheme from the last week of November.

Recently, a nine-judge constitution bench of the apex court had held that Right to Privacy was a Fundamental Right under the Constitution. Several petitioners challenging the validity of Aadhaar had claimed it violated privacy rights.

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The Centre had on October 25 told the top court that the deadline for mandatory linking of Aadhaar to receive benefits of government schemes has been extended till March 31, 2018 for those who do not have the 12-digit unique biometric identification number and were willing to enrol for it.

The attorney general had told the court that no coercive action would be taken against those who do not have the Aadhaar card but are willing to enrol for. He had said such people would not be denied the benefits of social welfare schemes till March 31.

Some petitioners in the top court have termed the linking of the Unique Identification Authority of India (UIDAI) number with bank accounts and mobile numbers as "illegal and unconstitutional".

They had also objected to the CBSE's alleged move to make Aadhaar card mandatory for students appearing for examinations, a contention denied by the Centre.

One of the counsel representing the petitioners had earlier said that final hearing in the main Aadhaar matter, which is pending before the apex court, was necessary as the government "cannot compel" citizens to link their Aadhaar with either bank accounts or cell phone numbers.

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(With inputs from PTI)

In Video: Deadline for mandatory linking of Aadhaar extended