Income Tax Department has conducted inquiries at 12 places in Mumbai whether the campanies that had invested in BJP chief Nitin Gadkari's company, had given their addresses. AIR correspondent reports, Mr Gadkari is under attack over dubious funding of Purti Power and Sugar Ltd controlled by him. Media reports alleged that major investments and large loans to it were made by a construction firm Ideal Road Builders (IRB) group, which had won contracts between 1995 and 1999, when the BJP chief was PWD minister in Maharashtra.