After withdrawing a lot of cash, he went on a 10-day spending spree in South Korea's Gangnam district, says the Agence-France Presse (AFP) news agency.

A police spokeswoman told AFP that Mr Yoon was "a totally different person" when he was arrested.

"He'd had a nose and eye job, and his face had changed drastically," the spokeswoman added.

They were able to track him down after two alleged accomplices were arrested, local reports said.