Taipei prosecutors have started an investigation into allegations that four top politicians involved in attempts to form a “blue-white” presidential ticket have contravened election regulations.

Listed as defendants are Chinese Nationalist Party (KMT) presidential candidate and New Taipei City Mayor Hou You-yi (侯友宜), KMT Chairman Eric Chu (朱立倫), former president Ma Ying-jeou (馬英九) of the KMT and Taiwan People’s Party (TPP) Chairman and presidential candidate Ko Wen-je (柯文哲).

The case stemmed from judicial complaints filed last month with the Taipei District Prosecutors’ Office alleging that the KMT (blue) and the TPP (white) had engaged in bribery by offering money or other enticements to coax the other side to drop out of the race or accept a subordinate position.