MANILA, Philippines (2nd UPDATE) - Malacañang has picked former Muntinlupa Rep. Ruffy Biazon to replace Customs Commissioner Angelito Alvarez, ABS-CBN News sources said.

A source also told dzMM's Jun Lingcoran that President Benigno Aquino III has already signed the appointment papers.

Biazon, who refused to comment on the matter, has supposedly accepted the position already. He was reportedly rooting for the Department of Tourism post, however.

Biazon, a colleague of President Aquino in the Liberal Party, lost in the 2010 senatorial elections.

Alvarez denies resigning

Some quarters have been calling for Alvarez’s resignation allegedly due to his inefficiency as Customs chief.

Zambales Rep. Ma. Milagros Magsaysay said Alvarez should already exercise delicadeza and quit his post after his agency failed to collect billions in taxes from 2,000 container vans that recently went missing.

It has also been reported that Aquino himself wanted to boot out Alvarez.

In an interview with ABS-CBN News, Alvarez said he has not resigned nor will resign soon.

He also claimed not knowing any of the goings-on in Malacanang, except for some clues from Finance Secretary Cesar Purisima.

"Pinatawag niya ako sa bahay, ‘problema, ang dami talagang nagaambisyon sa pwesto mo maaring naapektuhan si presidente dito sa mga job demolition that are being held against me,’" he said.

Nonetheless, Alvarez said he will accept what is to become of his fate.

"Remember, I serve at the pleasure of the President. At any given time ay puwede niya akong palitan dito, so kung dumating yung time na may mapili na nga siyang replacement for me, definitely I will turn over the position in a very professional manner," he said. -- report from Lynda Jumilla, ABS-CBN News; Jun Lingcoran, dzMM