The Enforcement Directorate, ED today conducted searches at some locations in Mumbai in connection with money laundering probe against Pune-based stud farm owner Hasan Ali Khan and others. <br/><br/>PTI reports that the agency launched the searches early morning on at least four premises under the Prevention of Money Laundering Act.<br/><br/>The agency, which has booked Khan and few of his alleged associates under criminal charges of money laundering in 2011, had swooped down on a dozen premises last year too, in connection with its probe.