Saurabh Chandrakar, the alleged kingpin in the Mahadev Book betting app scam, has been arrested in the UAE on money laundering charges.Chandrakar is accused of orchestrating match-fixing in cricket through the Mahadev app.The Ministry of Electronics and Information Technology had blocked the app last year after allegations of fraud.The proceeds of the crime are estimated to be around INR 20,000 Cr, with high-profile politicians and bureaucrats allegedly involved.