Behind rows of barbed wire and a small army of personal security, impeached South Korean President Yoon Suk Yeol remained holed up in his sprawling hillside villa with his wife, dogs and cats on Tuesday as investigators planned his arrest.

The Corruption Investigation Office for High-ranking Officials will likely seek a new court warrant to extend the window for Yoon’s detention, according to police.

In a dramatic escalation of South Korea’s ongoing political crisis, anti-corruption investigators have sought a renewed arrest warrant for impeached President Yoon Suk Yeol, whose controversial attempt to impose martial law last month plunged the nation into turmoil.