South Korea’s acting leader on Friday accepted the resignation of the chief of the presidential security service, Park Jong-joon, as he faced police questioning over how his forces blocked law enforcement efforts to detain impeached President Yoon Suk Yeol last week.

President Yoon Suk Yeol’s security service stopped an effort to detain him on insurrection charges and has vowed to do so again. Its roots are in the era of military dictatorships.

Crowds of people wrapped up against the bitter January cold clutch signs emblazoned with the slogan “Stop the Steal,” wave US flags, and don red MAGA-like hats.