The rift in top Airport of Thailand (AOT) management disclosed after its board approved a resignation of Chairman Gen. Chana Yoosathaporn, who just returned to work from 30-days sick leave.

Transportation Minister Santi Prompat said that the resignation will take effect at the beginning of August.

He declined to disclose details of Gen. Chana’s successor.

A source involved in the board meeting disclosed that Gen. Chana has filed a resignation over health problem but insiders believe it is political issue.

Gen. Chana was appointed as AOT chairman by military-installed government after coup de’ete on September 19, 2007.

He was forced to resign in the board’s mid-year evaluation of the state enterprise’s performance.

Gen. Chana will receive around six million baht as remuneration for his service.