Taiwanese prosecutors expanded an election-interference investigation to raid the home and office of a prominent media figure, a move that is bad news for him and politically sensitive for Taiwan's media landscape.

• Prosecutors in Hsinchu got a court-approved detention order against a man surnamed Peng, accused of trying to illegally influence an election.
• A day later, investigators searched the home and company of Wu Tzu-chia, chairman of the Formosa e-News outlet, seeking evidence on who else may be involved.
• Wu was questioned by police and released after giving a statement, with lawyers present; prosecutors have not ruled out calling him back for further questioning.
• The case centers on alleged violations of election law aimed at causing a candidate to lose unfairly, and investigators are trying to trace the scheme to its source.

Outlook: Prosecutors are expected to keep digging for other people involved, and a formal summons for Wu could follow.