SEOUL, Dec. 11 (Xinhua) -- South Korea's embattled President Yoon Suk-yeol has been under mounting pressure, with his office being raided by police on Wednesday over martial law declaration last week.
Those subject to the raid were the National Police Agency, the Seoul Metropolitan Police and the National Assembly Police Guards.
A group of investigators entered the presidential compound to seize documents on the emergency martial law declared by Yoon on the night of Dec. 3 that was rescinded by the National Assembly hours later.
Yoon reportedly was not staying in the presidential office building.
Meanwhile, police arrested South Korea's police commissioner and the Seoul police chief early Wednesday in connection with a probe into the short-lived martial law imposition, Yonhap news agency reported.
Cho Ji-ho, commissioner general of the Korean National Police Agency, and Kim Bong-sik, head of the Seoul Metropolitan Police Agency, were arrested on insurrection charges, according to a special investigation team under the national police.
The two police chiefs were suspected of instructing police officers to cordon off the National Assembly compound to block lawmakers from attending a plenary session for a vote against the imposition of the emergency martial law.
Police made the arrest in consideration of seriousness of the charges and the possibility of destruction of evidence by the two officers, Yonhap said, citing police sources.
Authorities had previously confiscated the two officers' cellphones and placed travel bans on them.
In addition, South Korea's Corruption Investigation Office for High-ranking Officials (CIO) chief said Wednesday that the CIO will attempt to arrest Yoon with and without an arrest warrant if conditions are met, according to multiple media outlets.
Oh Dong-woon made the remark during a parliamentary hearing, saying the CIO will do everything it can.
Asked about whether the investigative agency could arrest Yoon without an arrest warrant, Oh said yes.
The country's police, prosecution and the CIO have been investigating rebellion charges against Yoon, cabinet members and military commanders.■