This is where we will leave our live coverage of detained impeached South Korean president President Yoon Suk Yeol.

You can keep up to date with any major updated here. 

Here's a summary of what happened today:

• South Korea's impeached President Yoon Suk Yeol was detained and questioned as part of an investigation into alleged insurrection
• The accusations are related to Yoon's martial law attempt in December last year
• More than 3,000 police officers marched onto Yoon's residence this morning
• Authorities have 48 hours to question Yoon after which they must seek a warrant or release him
• Yoon is refusing to talk and has not agreed to have interviews with investigators recorded on video, an official says
• His lawyers are continuing to argue that the Corruption Investigation Office does not have the authority to handle his case

Dozens of protesters remain outside the headquarters of South Korea's anti-corruption watchdog. 

We're hearing reports from inside that Yoon Suk Yeol is refusing to answer questions. 

Outside, his supporters applaud his defiance. 

"President Yoon will sacrifice himself for us, and the freedom of Korea," said one protester Lee Song Man.

"I'm very sad today because something happened that shouldn't be happening." 

In the eyes of his supporters, today's arrest is nothing more than a political witch hunt. 

"This arrest should have been done in a lawful way. I ran here to protest," said protester Park Soon Rae. 

Authorities have 20 days to indict President Yoon Suk Yeol from the moment of his arrest and the clock is ticking. 

The Corruption Investigation Office, which will question him in that period, is made up of prosecutors under its head Oh Dong-woon, who was formerly a judge.

Two of the four investigative divisions currently have no staff and just nine prosecutors and Oh's deputy are handling Yoon's case. 

It's led to questions over whether the agency has the capacity to successfully build a case against the impeached president. 

Some protesters displayed fervent support, for or against Yoon, outside his residence earlier today. 

"Even though I am nearly 70 years old, I can never allow this free Republic of Korea to be handed over to Lee Jae-myung, the one who is a coup leader," pro-Yoon supporter Kim Wook-Hee said.

But for the anti-Yoon protesters, justice was precedent for their rally.

"The side of President Yoon Suk Yeol might argue that this concerns national dignity and that the status of the president should not be treated in this way," 51-year-old  Cho Sun-Ah said.

"But regardless of all of that, I think it's wrong for the leader of a rebellion to not face any legal consequences."

A White House National Security Council spokesperson says the US is committed to working with the government in Seoul. 

It added that it appreciates all its efforts and citizens "to act in accordance with the Constitution". 

Meanwhile, the top government spokesperson Japan Yoshimasa Hayashi told a daily news briefing that Tokyo was following developments in South Korea "with particular and serious interest".

In a Facebook post, Mr Yoon has repeated election fraud claims and spoke of "hostile" nations attacking the country, alluding to North Korea.

He also thanks his supporters in what appears to be a hand written letter.

Reporting with AFP

Earlier, we heard from our North Asia correspondent James Oaten who is outside the Corruption Investigation Office. 

You can hear more about what it's like at the scene here:

While in custody, Mr Yoon is expected to be held at Seoul Detention Center in Uiwang, South Korea.

According to precedent and due to his status, Mr Yoon will probably be assigned a solitary cell. 

Here's some pictures of the centre: 

Yoon has refused to be filmed during questioning, according to a Corruption Investigation Office official. 

Investigators began questioning Yoon shortly after his arrest but said that he had exercised "his right to remain silent".

The official added that Yoon would spend the night at a detention centre.

South Korea's impeached President Yoon Suk Yeol is refusing to talk during an interrogation over allegations he masterminded insurrection, the country's corruption investigation office says.

An official at the Corruption Investigation Office for High-ranking Officials says he didn't have further information on why Yoon had remained silent. 

Yoon has become the country's first incumbent president to be detained by authorities.

Reporting with Reuters