TAIPEI -- China has detained a Taiwan-based publisher on the grounds he has allegedly endangered national security, in another move that raises concerns about China's arbitrary arrests.
Confirmation follows formal arrest of Taiwanese independence activist

People gather around tables with newly released books on display during the Taipei International Book Exhibition on Jan. 31.
TAIPEI -- China has detained a Taiwan-based publisher on the grounds he has allegedly endangered national security, in another move that raises concerns about China's arbitrary arrests.