Digging deeper into a web of shadowy bribery allegations,... prosecutors are set to question Lee Sang-deuk , the brother of ex-President Lee Myung-bak over allegations he took illicit funds from the country's intelligence agency. <br /> The 83-year old former lawmaker was initially scheduled to appear before prosecutors earlier this week,... but the date was postponed upon his request citing lack of preparation and health issues. <br />Prosecutors believe the National Intelligence Service handed millions of dollars of its special activity funds to Lee since early 2011 when he was a sitting lawmaker for then-ruling political party, and when Lee Myung-bak was president. <br />In another, but not completely separate case,... the former president's nephew,.. Lee Dong-hyung was also questioned by prosecutors this week, over his suspected involvement in the alleged creation of the ex-president's slush fund. <br />