With this development, Loop Mobile will not be able to migrate its 17 lakh subscribers to Airtel as envisaged earlier.
Airtel in a filing to BSE said its proposed transaction related to Loop was conditional upon DoT approvals which had not been received till date.
"In light of this update and the fact that Loop's mobile license is to expire at the end of this month, we have decided to terminate the discussions with regard to the transaction for acquiring subscribers of Loop. A formal communication to this effect has been released to Loop at 05:19 PM today," Airtel statement said.
The apex court's order, however, did not apply to Loop Mobile's Mumbai licence that is expiring on November 29. The company also did not purchase spectrum in auction held in February this year which was mandatory for continuing its operations.
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Private sector lender Axis Bank has also told the DoT that Rs 215-crore loan to Loop Mobile will be at risk if the deal of the Mumbai-based operator to sell its assets to Bharti Airtel is not approved.
Airtel had signed the deal with Loop in February this year to buy business and assets of Loop Mobile in Mumbai under a strategic agreement for about Rs 700 crore.
Shares of Bharti Airtel today fell by nearly 3 per cent to settle at Rs 385.30 on the BSE at close. At NSE, it was down 2.29 per cent to end at Rs 386.70.
To a particular query by BSE on fall in stock price, Airtel said it has complied with disclosure obligations and is "not aware of any information which could explain the movement in trading of shares as mentioned in the aforesaid email.