Chen Yu-hsuan, a 44-year-old from Taiwan believed to be working in the Philippines, was arrested in Seoul on Sunday, Hongxing News reported.
She is suspected of being behind the deaths of a Chinese citizen, surnamed Xia, and a Chinese-American businessman who had also been kidnapped.
The Taiwanese Criminal Investigation Bureau said on Tuesday that the suspect, identified by her surname Chen, was born in Taipei. It would “continue to pay attention to the matter, and the foreign ministry will assist in handling the matter in the future”, the bureau added.