Taipei's city government has removed the head of its Feitsui Reservoir agency amid a corruption probe — bad news for Mayor Chiang Wan-an's administration, though the fast dismissal is meant to limit the damage.

• Lin Yu-yi, head of the Taipei Feitsui Reservoir Management Bureau, was fired after an internal ethics unit found he may have broken the law.
• The case started with a tip-off, and the city's ethics office opened its own investigation before handing it over.
• Justice Ministry's anti-corruption agency has taken over, working under prosecutors, and investigators have already collected files from the reservoir agency.
• Chiang Wan-an ordered a strict and fast inquiry after getting the first report, then dismissed Lin once the case was passed up.
• Prosecutors and investigators are not commenting on what Lin is suspected of doing.

Outlook: The anti-corruption agency's investigation will decide whether charges follow, and more details are likely to surface as prosecutors move ahead.