This is the Global News podcast from the BBC World Service.

I'm Alex Ritson and at 14 hours GMT on Wednesday the 15th of January, these are our main stories.

The impeached South Korean president is in custody, but not cooperating.

We bring you the latest.

Dozens of bodies have been pulled from an abandoned gold mine in South Africa.

And there's emergency blackouts in Ukraine after a huge Russian missile attack.

Also in this podcast.

Examples on the extreme could be Mike Tyson, the boxer we all know,

who has a BMI of 32.

He's anything but obese. Why it might be important to change how we diagnose obesity.

We start in Seoul.

That was the scene earlier outside the office where South Korea's impeached President Yun Suu Kiyol was being questioned after he was finally arrested,

after a six-hour standoff over his failed attempt to impose martial law last month.

Mr. Yun's supporters chanted and waved flags as, inside, anti-corruption investigators quizzed him on charges of insurrection and abuse of power.

He's now being held in a detention centre.

Just before his arrest, Mr. Yun recorded this defiant message.

Today, upon witnessing these individuals invading the security zone using firefighting

equipment, I decided to comply with the corruption investigation officer's request for a voluntary

appearance, despite it being an illegal investigation in order to prevent any unfortunate and violent incidents.

However, I do not acknowledge the legitimacy of this investigation. As the President, who is sworn to uphold the Constitution and the legal system of the Republic of Korea. My compliance with such

illegal and invalid procedures does not signify my acceptance of them. It is solely a measure to

prevent any unfortunate bloodshed. Earlier, investigators had forced their way into the presidential

...