Sawt Falasteen - South Korea's Yoon will not attend first impeachment hearing

Yoon has been holed up in the presidential residence and protected by an elite guard force since being suspended and impeached last month following a short-lived declaration of martial law that plunged the country into political chaos.

He has refused to meet prosecutors and investigators, and earlier this month his presidential guard unit thwarted an attempt to arrest him following a tense, hours-long standoff.

The Constitutional Court has scheduled five trial dates spanning January 14 to February 4, which will proceed in his absence if he does not attend.

"Concerns about safety and potential incidents have arisen. Therefore, the President will not be able to attend the trial on January 14," lawyer Yoon Kab-keun said in a statement sent to AFP.

"The President is willing to appear at any time once safety issues are resolved."

The court will decide whether to uphold his impeachment or restore him to office.

Separately, investigators seeking to question Yoon on insurrection charges linked to his ill-fated martial law declaration are preparing another arrest attempt.

- 'High alert' -

Yoon's legal team say his guards remain on "high alert".

Yoon would become the first sitting South Korean president to be arrested if investigators are able to detain him.

If convicted, he faces prison or even the death penalty.

A team of Corruption Investigation Office (CIO) investigators and police are planning for the next attempt, which they said could be their last.

The CIO said anyone obstructing their attempt could be detained themselves and police reportedly held a meeting of top commanders on Friday to plan for the renewed effort.

Former presidential guard security chief Park Chong-jun -- who resigned on Friday and was automatically replaced by a more hardline Yoon loyalist -- told reporters there must be no bloodshed in any second arrest attempt.

The National Office of Investigation, a police unit, sent a note to high-ranking police officials in Seoul requesting they prepare to mobilise 1,000 investigators for the fresh attempt, the Yonhap news agency reported.

Rival protesters for and against Yoon have gathered almost daily in the South Korean capital since the crisis unfolded.

As the crisis goes on Yoon's ruling party has seen a bump in approval ratings.

A new Gallup survey published Friday showed the People Power Party's approval rating had risen to 34 percent from 24 percent three weeks ago.

Y.Shaath--SF-PST