President Rodrigo Duterte on Saturday reaffirmed his pledge to fight corruption and announced that he has fired two deputy commissioners of the Bureau of Immigration (BI) involved in a bribery scandal.

"I have directed the dismissal of the 2 deputy commissioners now tainted with corruption," he said after arriving from a state visit in Singapore. "They will face the full force of the law."

Also dismissed from service was the bureau's intelligence chief, retired police general Charles Calima.

"I give you my word: as president, I shall work tirelessly to assure all these [campaign] promises become a reality," he added.

Hours before Duterte arrived in Davao City, the two BI deputy commissioners--Al Argosino and Mike Robles--said they had tendered their resignation effective immediately.

Both Argosino and Robles are fraternity brothers of Duterte in

San Beda College of Law’s Lex Talionis Fraternitas, Inc..

Justice Secretary Vitaliano Aguirre earlier recommended the 2 officials' termination due to loss of trust.

Aguirre has already designated officers-in-charge OICs to replace them.

Argosino and Robles are accused of extorting P50 million from businessman Jack Lam in exchange for the release of around 600 Chinese employees working in Lam's online gaming facility in Fontana Leisure Parks and Casino in Clark, Pampanga.