The main opposition Democratic Party (DP) decided Monday to file a complaint against President Yoon Suk-yeol on charges of violating the election law by stating false information, days after the prosecution summoned DP leader Lee Jae-myung for questioning over similar charges.

The DP plans to file the complaint with the Seoul Central District Prosecutors' Office on Monday afternoon in connection with Yoon's remarks about stock manipulation allegations involving first laday Kim Keon-hee, the party said in a text message to reporters.

Prosecutors have been investigating the chair of Deutsch Motors Inc., a BMW car dealer in South Korea, over allegations of mobilizing influential market players, including the first lady, in order to boost Deutsch Motors' stock prices starting in December 2009 for about three years.

The DP's move came four days after the prosecution sent DP leader Lee a subpoena to appear for questioning over charges that he violated the election law by making false statements about land development projects pushed for in the city of Seongnam, just south of Seoul, when he was its mayor.

The DP has condemned the summons as political oppression against the opposition.

Lee was asked to come to the Seoul Central District Prosecutors' Office by Tuesday morning for questioning.

The party was to hold a general meeting of its lawmakers Monday to decide whether to comply with the summons, but widespread views are that the party is likely to reject the demand. (Yonhap)