By Hyonhee Shin SEOUL (Reuters) -Thousands braved heavy snow in Seoul on Sunday to rally for and against arresting impeached President Yoon Suk Yeol, as South Korea's political crisis appeared headed toward another high-stakes confrontation.

Protesters have thronged the official residence of impeached President Yoon Suk Yeol, where officials trying to arrest him were blocked by security guards.

With the arrest warrant for impeached President Yoon Suk Yeol expiring on Monday, the South Korean anti-corruption agency asked police to detain the embattled leader.