KUALA LUMPUR (THE STAR/ASIA NEWS NETWORK) - Malaysia's Prime Minister Najib Razak has questioned the publicity given to the report by the United States Department of Justice (DOJ) on embattled sovereign wealth fund 1Malaysia Development Berhad (1MDB).

In a press conference held at the Umno headquarters here, Datuk Seri Najib said reports like this were usually kept "low key".

"It is unprecedented for a report like this to be given such publicity. Usually it's private and kept low key but now it's been made a big deal," he said.

Asked whether he felt the report was a result of all the media coverage given on 1MDB, the Premier said it would seem so.

"On the surface, it would appear that it came from certain sources. We will observe the proceedings that follow suit. I can't say for sure where it came from, but definitely not from the government or the Attorney-General," he said.

Mr Najib added that he did not want to speculate on the matter.

"We have some opinion about it, but we don't want to speculate on it publicly."

Mr Najib added that no legal action would be taken against the DOJ, but said that the DOJ should have sought input from 1MDB or Malaysian authorities before writing their report.

"We are not involved in it. I however urge those named to clear their names," he said.