South Korean police book impeached president for obstructing execution of his arrest warrant

A protester wearing a mask of South Korean president Yoon Suk Yeol attends a rally calling for him to step down in Seoul on Wednesday - (AP)

South Korean police have booked impeached president Yoon Suk Yeol for obstructing the execution of a warrant issued for his arrest over a failed attempt to impose martial law late last year.

The police were attempting to formally build a case against Mr Yoon on the suspicion that he had blocked the execution of the warrant since around 3 January, a spokesperson said.