The Seoul Central District Court on Wednesday sentenced former National Intelligence Service chief Won Sei-hoon to two years in prison.
He was found guilty of receiving around W160 million (US$1=W1,068) in bribes in 2009 and 2010 from the former head of now-bankrupt Hwangbo Construction.
Won was intelligence chief under then-President Lee Myung-bak. He has been a close confidant of the ex-president since Lee was mayor of Seoul, serving as first vice mayor and minister of public administration and security under Lee.
He is separately on trial on charges of meddling in the 2012 presidential election by ordering some of his agents to post thousands of messages online in favor of Park Geun-hye, who was the ruling-party candidate and later won the election.
The final ruling is expected to be delayed because prosecutors failed to produce enough evidence.