Madrid, Apr 17 (EFE), (Camera: Javier Mariscal).- Police detained former Spanish deputy prime minister and one-time head of the International Monetary Fund Rodrigo Rato for seven hours as part of an investigation into fraud, money laundering and concealment of assets. br br br br Keywords: efe,fraud,asset laundering,rodrigo rato,deputy prime minister,international monetary fund,investigation,director,imf,spain.