A Taiwanese TV personality has been arrested in Japan and named on Japanese national television over accusations she poured oil on a protected Buddhist relic, a story that is now a cross-border embarrassment for both sides.

• Tsai Yi-chen, known as "Wu Xiong," was arrested after re-entering Japan on the 22nd over an April incident at Yakushi-ji temple in Nara.
• Staff found small marks on the Buddha's Footprint Stone, a designated national treasure, and tests showed glycerin; security cameras identified her.
• She reportedly said she "splashes oil in prayer" over things that move her, and police are checking whether she did the same at other sites.
• Japanese outlets ran her face and social media photos openly, and her past ties to a church have drawn fresh attention back home.
• Her sister, actress Tsai Han-chen, said through her agent she only learned of it from the news.

Outlook: Under Japan's cultural property law she could face up to five years detention or a heavy fine, with the case still in the hands of Japanese investigators.