A law firm acting on behalf of the prime minister's wife Rosmah Mansor has denied that funds deposited into her bank account as reported by Sarawak Report was from 1MDB.

"My client have (sic) not committed any criminal offence or any misappropriation of funds and strongly denies any links to the funds being from 1MDB.

"The report is deemed to be indecent, menacing, false, and is intended to annoy or harass my client," said the law firm Messrs Noorhajran Mohd Noor in a statement tonight.

This is over whistleblower siteSarawak Report's claim yesterday that RM2 million in cash was deposited into Rosmah's bank account between Feb 10 and April 23 this year.

The law firm also criticised Sarawak Report editor-in-chief Clare Rewcastle Brown (photo) for the report.

"By issuing improper and incorrect reporting against my client and in the spirit of responsible journalism (sic), (Sarawak Report) must stand and justify by the story it reports.

"My client appeals for responsible reporting of facts, to have ethical and moral obligations of fairness and accuracy," it said.

Despite referring to the report as "incorrect" and "false", it made no threat to sue Sarawak Report or its editor-in-chief.

The whistleblower site had said its report was based on documents from government investigators.

Following the published report, the special task force probing a separate allegation that RM2.6 billion in funds linked to 1MDB was deposited into the private bank accounts of Prime Minister Najib Abdul Razak confirmed that it had also been investigating the said Rosmah's account.

"The task force knew about this before the (media) expose and an investigation is being conducted," it said in a joint statement today.

The statement was signed by the heads of police, Bank Negara Malaysia, the Malaysian Anti-Corruption Commission, and the Attorney-General's Chambers.