Kerala Chief Minister Pinarayi Vijayan has written to Prime Minister Narendra Modi, saying his state cannot spare any further oxygen as they have already supplied their buffer stock to neighbouring states and are now left with just 86 metric tonne of buffer. The state, he wrote, will allow 40 metric tonnes of oxygen to Tamil Nadu till May 10, going by the May 6 decision of the Central Committee of Oxygen Allocation. Tamil Nadu Chief Minister MK Stalin had on May 7 written to the Centre asking for the orders for the allocation of 40 MT oxygen from Inox Kanjikode for Tamil Nadu. Tamil Nadu is overlooking an oxygen shortage in the state after Kerala announced it would stop supply to the neighbouring state to augment supply for its own requirement.