He is the convicted mastermind in the murders of Eileen Sarmenta and Allan Gomez, both students of the University of the Philippines, Los Baños (UPLB), in 1993.

[6][7][8] On the night of June 28, 1993, Eileen Sarmenta and Allan Gomez, students of the University of the Philippines, Los Baños (UPLB), were abducted at gunpoint by men working for Antonio Sanchez, the mayor of Calauan, Laguna.

Aurelio Centeno joined Sanchez's personal aides Edwin Cosico and Raul Alorico to watch television at the adjacent resthouse.

Despite Sarmenta's pleas to spare her life, Luis Corcolon fired his baby Armalite at her, and ordered Centeno to get rid of her body.

On August 29, 1999, Sanchez was sentenced to two counts of reclusion perpetua by the Supreme Court for the murders of Nelson and Rickson Peñalosa.

[12] A report by GMA News showed that Sanchez could have walked free in August 2019, according to a document bearing the signature of Bureau of Corrections director Nicanor Faeldon.

[13] The document said the release order was for one Antonio Leyza Sanchez, "who was found to have served 40 years upon retroactive application of RA No.