The family of former chief minister O Panneerselvam on Tuesday donated Rs 50 lakh to Sri Lanka, which is reeling under financial crisis.Panneerselvam, in a letter written to the Finance Secretary, had stated that a demand draft (DD) for Rs 25 lakh was drawn from the account of his elder son P Raveendranath and another Rs 25 lakh was drawn from the account of VP Jayapradeep.Panneerselvam had also urged the Finance Secretary to issue receipts for the payment.