Authorities investigating suspended South Korean President Yoon Suk Yeol arrived at his residence Wednesday in a second attempt to detain him over his ill-fated martial law declaration last month.

Police dispatched some 3,200 officers to the president’s sprawling hillside estate in Seoul, according to Reuters, where he has spent weeks in hiding whilst surrounded by a personal security detail.

Video shows officers closing in on Yoon’s residence, according to Reuters, where hundreds of his supporters had already gathered to protest on his behalf. Earlier, they were reportedly seen pushing through a group of them.

The arrest warrant is the first ever to be levied against a sitting South Korean president. Yoon’s warrant stems from his declaration of martial law on Dec. 3 out of apparent frustration with the opposition-dominated parliament’s refusal to pass key items on his political agenda.

The move was decried within South Korea and abroad, where analysts expressed shock at the sudden and unprecedented move in what is typically one of Asia’s most stable democracies.

Parliament unanimously rejected Yoon’s declaration, and subsequently suspended him on Dec. 14 in a 204-85 vote that included members of his own party. 

Yoon will be formally impeached should the Constitutional Court uphold the motion with a three-fourths majority.

The court’s next hearing is scheduled for Thursday.

Reuters contributed to this report.