Lee Sang - deuk , former President Lee Myung - bak ’ s elder brother and a former Saenuri Party lawmaker , sits at home with his eyes closed as prosecutors raided his home and office Monday . ( Yonhap ) Prosecutors on Monday raided the residence and office of former President Lee Myung - bak ’ s elder brother as part of a probe into allegations that he accepted illicit funds from the state spy agency . Investigators from the Seoul Central District Prosecutors ’ Office searched Lee Sang - deuk ’ s home in Seongbuk - dong and office in Yeouido , seizing documents and computer hard drives . Prosecutors said they have obtained testimony from a high - ranking official of the National Intelligence Service that the state spy agency delivered hundreds of millions of won from its off - the - books “ special activities ” funds to Lee Sang - deuk .   Monday ’ s raids come as the prosecution widens its investigation into the alleged transfer of NIS funds to the presidential office during Lee Myung - bak ’ s 2009 - 2013 term . Several former aides of Lee have been arrested or questioned as suspects in the illicit provision of funds . Prosecutors are paying attention to the fact that Kim Ju - seong , a longtime associate of Lee Sang - deuk who worked together with the former president ’ s elder brother at Kolon Group for decades , served as the director of planning and coordination at the NIS between 2008 and 2010 . Kim served as vice chairman of Kolon Group , and Lee as the chief executive of a Kolon affiliate . The appointment of Kim as a NIS director despite his lack of related experience had drawn attention at the time . Kim reportedly told investigators that he received the first request for money from Cheong Wa Dae in March 2008 , and that similar requests continued even after he raised concerns in a one - on - one meeting with then - President Lee . Kim allegedly arranged the delivery of funds to Kim Paik - joon , then senior secretary to Lee for administrative affairs . Prosecutors are looking into the confiscated items , not ruling out the possibility that the money from the NIS could have been spent for Lee Sang - deuk ’ s political activities . The 83 - year - old former six - term lawmaker , who wielded wide - ranging influence during his brother ’ s presidency , had been jailed for taking bribes from a savings bank . He is on trial over a corruption case involving steelmaker Posco . The investigation into the NIS funds case is expanding to yet another family member of the former president -- his wife . Prosecutors said they cross - interrogated a former assistant to then - first lady Kim Yoon - ok and Kim Hee - joong , then - presidential secretary for private affairs , to verify Kim ’ s confession that he delivered $ 100 , 000 from the NIS fund to her through an assistant in 2011 . The ex - assistant reportedly admitted to part of the allegation . By Kim So - hyun   ( sophie @ heraldcorp . com ) [ 코리아 헤럴드 ] [ K - POP HERALD ] [ 페이스북 ] <ⓒ KoreaHerald ( www . koreaherald . com ) 무단 전재 및 재 배포 금지 >