The three state-owned fuel retailers have been "directed to stop supplies of LPG refills to households having multiple- connections for which no KYC (Know Your Customer) details have been received, with effect from June 1," a statement issued by Indian Oil Corp, the nation's largest oil firm, said.
No transactions, including delivery of non-subsidised cylinders, will be permitted in such cases once such connections have been blocked.
IOC said all multiple LPG connection holders have been identified and intimated.
All three firms, IOC, Hindustan Petroleum (HPCL) and Bharat Petroleum (BPCL) are sharing data on LPG customers.
Customers whose name figure on the list of multiple connection holders need to submit their KYC details along with proof of identity and proof of address immediately to their LPG distributors to continue receiving uninterrupted quota of subsidised cylinders, IOC said.
Other customers whose names do not appear in the list need not submit their KYC details as of now.
"The oil companies are advising all multiple-connection holders to submit their KYC details, pertaining to the LPG connection they wish to retain, immediately to their LPG distributors," the statement said adding customers have been advised to surrender excess or multiple connections.
Though the deadline for submission of KYC was December 31, 2012, KYCs are being accepted and LPG connections are being regularised for supply of subsidised cylinders till date, it added.