The Attorney-General should not hesitate to take action against the prime minister if the documents relating to the 1MDB investigation prove to be true, said a DAP lawmaker.

Bukit Gelugor MP Ramkarpal Singh ( photo ) said the confirmation by AG Abdul Gani Patail that he had received documents from a special task force relating to allegations of channelling of funds to the prime minister's personal bank account, cannot be taken lightly.

"Of utmost importance at this stage, is the need for a full and transparent investigation... no doubt, such an investigation ought not to be interfered with.

"But at the same time, due to seriousness of the allegations and the fact that they involve the prime minister directly, the public has a right to know if they are baseless or not.

"In the event they are found to be true, the AG should not hesitate to prosecute the prime minister for various offences including, but not limited to, criminal breach of trust (CBT) and offences under the Malaysian Anti-Corruption Commission Act 2009," he told reporters in Kuala Lumpur today.

Last Friday, the WSJ reported that documents from Malaysian investigators revealed that US$700 million, allegedly originating from 1MDB, were deposited in Najib Abdul Razak's private bank accounts in Malaysia.

The transactions allegedly took place on two occasions, once in March 2013, before the 13th general election, and again in early 2015.

Najib has denied any involvement in these transactions and is mulling legal action against WSJ which is standing by its story.

Ramkarpal, along with Segambut MP Lim Lip Eng and Ipoh Timur MP Thomas Sue, lodged a report at Dang Wangi District police HQ today, urging them to investigate the 1MDB scandal especially after the WSJ expose.

"I call for a thorough, transparent probe into this matter which should not end on this US700 million issue.

"There are also other problematic issues like a power plant purchased at inflated prices from the Genting group by 1MDB," he noted.

On a related matter Ramkarpal, who is a lawyer, asked Najib to consider carefully before taking legal action.

He said he had no problems if Najib wanted to clear his name but suggested the prime minister's legal team file the suit in Hong Kong, the office of WSJ.

"The prime minister should consider very carefully if he intends to take legal action against WSJ, even though there's no obligation for him to do so. But it is prudent for him to clear his name.

"Defamation proceedings should be filed in the country the article was published," he noted.