Deputy Prime Minister Najib Abdul Razak must break his silence over the Altantunya Sharribuu murder case since his name has cropped up in the legal proceedings.

In a statement today, Parliamentary Opposition Leader Lim Kit Siang said the deputy premier cannot continue to keep his ' elegant silence '.

Political analyst Abdul Razak Baginda, 46, has been charged with abetment in the murder of the 28-year-old Mongolian national.

Two police officers from the Special Action Unit (UTK) Azilah Hadri, 30 and Airul Azhar Umar, 35 have been charged with her murder. All three face the death sentence.

Abdul Razak is a close confidante of Najib while it was revealed in court last week that the analyst had come into contact with the UTK officers via one DSP Musa Safri whom he met at official functions, including the deputy premier's.

In an unprecedented move, Abdul Razak's lawyer Wong Kian Kheong read out his client's affidavit during an application for bail which contained many startling information.

Was he aware?

Commenting on this, Lim said the move had raised 'fresh and grave' issues demanding a public response from the deputy premier.

He asked if Najib was aware from the beginning of Abdul Razak's problems with Altantunya?

He also questioned if the deputy premier knew of the involvement of DSP Musa and UTK officers (allegedly) assigned to him in Abdul Razak's problems with Altantunya?

Lim's third question was whether Najib knew that Azilah (allegedly assigned to protect him) had (allegedly) killed six people?

Meanwhile, the opposition leader also urged Inspector-General of Police Musa Hassan to allay public concerns as to whether police investigations have been comprehensive in this case.

He listed three questions for Musa:

1) Whether Najib had been investigated by the police?

2) Whether DSP Musa had been investigated?

3) Whether the police had investigated Abdul Razak's allegation that Azilah had killed six or more people, and whether any such killings were in the course of duty or otherwise?

"It is not only the three accused who are in the dock, the integrity of Malaysian government leaders, the rule of law and police system are also in the dock," he said.

"Both the nation and the world are watching," he added.

In a related development, DAP national chairperson Karpal Singh also called for an investigation into the alleged killings by Azilah as stated by Abdul Razak in his affidavit.