MUMBAI: The crime branch, in a joint operation with the local police, busted a rave party at a resort in Khalapur, Raigad district, late on Sunday. Nearly 300 youngsters, including 60 girls, were rounded up. A Mumbai police officer was also among those detained from the Mount View Resort on the old Mumbai-Pune highway.Superintendent of police (Raigad) R D Shinde said, “We are checking the antecedents of the officer and trying to find out why he was present at the rave party.”Asked if any celebrity or his/her family member was present at the rave party, Shinde said his team was preparing a list of those rounded up. “It’s too early to comment on this,” he said.Incidentally, June 26 has been declared as the International Day against Drug Abuse and Illicit Trafficking by the UN.”We have found some drugs on the youngsters and are trying to identify them,” Shinde said. “The Narcotic Drugs and Psychotropic Substances (NDPS) Act would be applied if the seized items are found to be narcotic drugs or psychotropic substances.”The police had received a tip-off that a rave party would be held in Khalapur on Sunday.”The youngsters could either hail from Mumbai or Pune as both the cities are close to Khalapur. They are in their twenties,” an official said.