MANILA - The Office of the President on Friday advised deputy National Security Adviser Luis Singson to "behave" and submit himself to due process after his wife, Rachel 'Che' Tiongson, disclosed on Thursday the physical abuse she suffered at the hands of Singson. 

"Our advise to Singson is to behave properly as an upright citizen and submit himself to due process of the law," said Press Secretary Cerge Remonde.

Remonde said he was not aware if President Arroyo's deputy national security adviser used government resources to spy on his wife.

Singson virtually admitted on Wednesday over dzMM that he beat up his wife last year after discovering she had an affair, and added she should be thankful he didn't kill her.

In an exclusive interview with ABS-CBN's Ces Oreña Drilon, Tiongson showed pictures of her badly-bruised face and arms allegedly caused by the beatings she suffered at the hands of Singson last August 22 after he found her with her boyfriend in her apartment.

She said Singson beat her up and even lashed her using the whip he uses to discipline his pet tiger.

Singson and his bodyguards also allegedly undressed Tiongson's boyfriend, took pictures of his penis, beat him up, and tortured him. In media interviews, he made fun of the boyfriend's allegedly tiny sex organ. 

A Quezon City trial court has granted Tiongson's request for a protection order against Singson, which means he should not go near his wife. 

Remonde said Malacañang's actions on Singson will "depend on the outcome of the case."

On Friday, in an interview over Umagang Kay Ganda (UKG), Singson said he never admitted that he beat up his wife, although he said she did get hurt.

Singson reiterated his earlier statement that Tiongson should be thankful she's alive.

Singson also told UKG he had evidence to prove that he and Tiongson were married, and denied Tiongson's claim they are already separated.

Singson was instrumental in the fall of the Estrada administration and the rise to power of President Gloria Macapagal-Arroyo in January 2001.