Metro Manila (CNN Philippines) — The Civil Aviation Authority of the Philippines (CAAP) has relieved the manager of the Kalibo International Airport (KIA) as the investigation into the alleged terminal fee scam is set to begin.

William Hotchkiss, director general of the CAAP, ordered the relief of Martin Tere as acting airport manager of the KIA on June 6.

Tere's relief will take effect on June 16 and Atty. Rafael Tatlonghari will be his replacement.

In May, the CAPP launched a probe into airport personnel who were allegedly involved in a multi-million peso scam where used terminal fee tickets were issued to passengers.

The scam reportedly allowed the airport personnel to pocket the cash paid by passengers.

Read: CAAP terminates airport staff in terminal fee ticket scam

Eleven personnel of the KIA were terminated for their alleged involvement in the scam.

According to a release from the CAAP, a total of ₱10 million in terminal fees was pocketed.

KIA charges a ₱200 terminal for domestic flights, while a ₱700 terminal fee is paid for international flights.

CAAP's Security and Intelligence Service (CSIS) is conducting a probe into the scam to determine whether criminal charges would be filed against those allegedly involved.