LUCKNOW, July 13 -- Four people were arrested after police on Sunday busted an alleged fuel adulteration unit operating from a house along the Lucknow-Hardoi highway and recovered a master key, plastic pipes, funnels and measuring cans allegedly used to siphon petrol from loaded tankers before delivery to city fuel stations, officials said on Monday.

The alleged unit was uncovered during Operation Ethanol Shield, a special drive launched by the Lucknow Crime Branch to crack down on organised fuel pilferage and adulteration.

During a raid near the Sanyasi Bagh flyover in Malihabad on Sunday, police said they uncovered a fully functional illegal fuel storage and mixing facility containing over 16,000 litres of petrol, diesel, adulterated ...