Prosecutors summoned a senior presidential official as part of an investigation into self-proclaimed power broker Myung Tae-kyun, which includes allegations that former President Yoon Suk Yeol and former first lady Kim Keon-hee exercised undue influence in election nominations.

The Seoul Central District Prosecutors' Office on Tuesday questioned Jeon Kwang-sam, senior presidential secretary for civil and social agenda, as a witness, marking the first time the agency summoned a senior official from the top office in the investigation.
 
The prosecution reportedly detected that Jeon and Seoul Mayor Oh Se-hoon had communicated after allegations involving Myung surfaced last year.

The agency is reportedly questioning Jeon over allegations that Oh had a businessman cover the cost of polls conducted by Myung's company ahead of the 2021 Seoul mayoral by-election. 

The prosecution plans to summon the businessman, Kim Han-jung, Kang Cheol-won, former Seoul deputy mayor for public affairs, and the mayor himself for questioning.