The police are monitoring those providing information to Al Jazeera journalist Mary Ann Jolley on her documentary regarding the murder of Mongolian national Altantuya Shaariibuu.

"We know there are people here who are involved with Jolley and giving her wrong information, and we are monitoring them," said inspector-general of police Khalid Abu Bakar.

"If needed, we will also take action against them," he told a press conference after delivering his keynote speech at the 'ICC-IMB International Meeting on Global Piracy, Armed Robbery and Maritime Security' in Kuala Lumpur today.

He previously said the Australian-based Jolley would be investigated under Section 505(b) of the Penal Code related to "statements with the intent to cause, or is likely to cause, fear or alarm to the public".

This is for her documentary that was attempting to follow-up on the murder of the Mongolian national, which contained claims that Sirul Azhar Umar, one of those convicted for the murder, had attempted to blackmail Prime Minister Najib Abdul Razak.

The report had also quoted an unidentified relative of Sirul alleging it was Abdul Razak Baginda who pulled the trigger in the murder of Altantuya.

After the documentary was aired, Najib said the allegations by Al Jazeera were part of a conspiracy to force him out of office.

IGP opens fire on Al Jazeera

Agreeing with this, Khalid said the police would probe the matter as a conspiracy.

"(Al Jazeera) is trying to confuse the people. You are trying to create something else from nothing. The case has gone to court, it has been decided.

"What are you trying to do?" he asked, directing his question to an Al Jazeera journalist who was present at the press conference.

When the journalist defended Al Jazeera by saying the news organisation had no hidden agenda and had tried to cover the story from all angles, he dismissed her answers.

"Whatever you say. Whatever it is, we are commencing our investigations on Al Jazeera. You answer when we call you for questioning," he said.

He then blasted Al Jazeera again, insisting that the police cannot allow the practice of bringing up something new after a case has been closed.

"If we allow this, then every case would come up with something new," he said.