The Delhi Police has arrested three persons who allegedly used to paint fire extinguishers as oxygen cylinders and sell them to needy people, officials said on Wednesday. <br /> <br />Police said the matter came to light Tuesday after a person named Mukesh Khanna, who runs Radha Vallabh Sewa Sangh NGO which serves free oxygen cylinders to Covid patients, filed a complaint at the Farsh Bazar police station. <br /> <br />Khanna alleged that one oxygen cylinder distributer, Varsha Engineering at Apni Colony, Alipur, had sold him oxygen cylinders at Rs 5,500 per for 4.5 litres. <br /> <br />When he contacted the same distributor again and asked for more cylinders, the distributor demanded Rs 13,000 for 4.5 litres cylinder, a senior police officer said. <br /> <br />On the complaint, a raiding team reached the location at Alipur where three people were found engaged in painting some gas cylinders in black colour.
