MANILA - Two years ago, former First Lady Imelda Marcos vouched for rapist-killer Antonio Sanchez and sought President Rodrigo Duterte's help in granting the former mayor an executive clemency.

In a letter dated May 29, 2017, then-Ilocos Norte Rep. Imelda Marcos said Sanchez “hopes to be released from prison due to his advanced age and failing health.”

“The aforesaid circumstances represent a valid attention as regards his behavior, character antecedents, mental and health condition which likewise justify a recommendation for executive clemency," the letter read.

"Your utmost consideration on the case of former mayor Antonio Sanchez is highly appreciated."

LOOK: Rep Imelda Marcos’s May 29, 2017 letter to President ⁦Duterte recommending convicted ex-mayor Antonio Sanchez’s appeal for executive clemency | via @sherieanntorres pic.twitter.com/DJMC2e6r1l — ABS-CBN News (@ABSCBNNews) September 3, 2019

The Board of Pardons and Parole (BPP) in December 2018 dismissed Sanchez’s petition for executive clemency. It upheld the dismissal of Sanchez’s appeal in a decision dated Feb. 27, 2019.

During Monday's Senate inquiry, Imelda's daughter, Sen. Imee Marcos was among senators who questioned the Bureau of Corrections' implementation of the good conduct time allowance (GCTA) law, which would have led to Sanchez' early release.

The senator said BuCor chief Nicanor Faeldon and other officials who processed the GCTA computation of Sanchez must be subjected to a lifestyle check, to which Faeldon did not object.