South Korean President Roh Moo-hyun has instructed prosecutors to consider reopening a probe into a financial scam allegedly involving the front-running presidential candidate.
In a statement released Sunday, Mr. Roh said a videotape had surfaced in which frontrunner Lee Myung-bak admitted having founded the company at the center of the 2001 scandal.
Lee, a former Hyundai executive and Seoul mayor running as the Grand National Party's candidate, has been heavily favored to win Wednesday's election.
Lee was suspected of involvement in a scam in which his ex-partner, Kim Gyeong-jun, allegedly manipulated the price of stocks in a company he owned.
South Korean prosecutors announced earlier this month that they had found no evidence that the conservative politician was involved in stock market manipulation.
Some information for this report was provided by AFP and AP.