TAIPEI (Taiwan News) — Prosecutors on Monday raided the New Taipei City KMT headquarters as part of an investigation into alleged forged recall petitions.

New Taipei City KMT Chair Huang Chih-hsiung (黃志雄) confirmed that the office had been searched and said the branch’s secretary and secretary-general were taken into custody from their homes, per ETtoday. The New Taipei District Prosecutors Office (NTDPO) declined to comment on the arrests, per CNA.

The previous April 15 raids targeted KMT offices in Sanchong and Banqiao Districts as well as officials’ homes in the Sanchong, Banqiao, and Yingge Districts. More than 20 individuals were taken into custody, per TVBS.

The investigation has disrupted operations at several KMT branches. In Taipei, the party’s leadership has been left vacant after several senior figures, including Chair Huang Lu Chin-ju (黃呂錦茹), were detained.

A source familiar with KMT operations in Taipei said Sunday that leadership of the party’s recall and anti-recall campaigns has been left entirely up to the central committee, per UDN. Taipei City Council KMT Caucus Secretary-General Li Ming-hsien (李明賢) urged the central committee to appoint a suitable interim chair to oversee ongoing efforts.

Another party source expressed concern that Taipei City Councilor Chung Hsiao-ping (鍾小平) may be considered for the position, potentially jeopardizing the KMT’s alliance with the Taiwan People’s Party.

In Yilan County, the KMT branch suffered a similar blow after a raid on Thursday. Newly appointed Secretary-General Wu Chien-hua (武建華), who was in Taipei during the search, is now the only high-ranking local party official remaining.

Wu said Sunday that the investigation has severely impacted the branch’s ability to coordinate the upcoming second phase of the recall process, leaving party members and volunteers uncertain about how to proceed, per UDN.