Authorities launched a massive crackdown on the oil adulteration mafia across Maharashtra on Thursday, raiding 200 places and arresting nearly 180 people, after an official was burnt alive by the oil mafia.Over 80,000 gazetted officers in Maharashtra also ceased work for the day to protest the killing of Malegaon Additional District Collector Yashwant Sonawane by suspected members of the oil mafia at Manmad in Nashik district, nearly 260 kms from Mumbai, on Tuesday.