The Centre has asked the BJP, Congress, Aam Aadmi Party and a few other political parties to furnish details about the source of their overseas funding. Sources said, the Home Ministry in separate communications, has asked the political parties to give details of their sources of funding, including those from abroad or foreign business enterprises. <br/><br/>Sources, however, said this was part of routine communication sent to political parties every year to ascertain whether the outfits have violated the provisions of Foreign Contribution Regulation Act.<br/>