Attorney-general Mohamed Apandi Ali has directed the police to reinvestigate the 1MDB fund scandal, said Minister in the Prime Minister's Department Azalina Othman Said.

This is the second time in four months that the AG has rejected police investigation papers on 1MDB.

"The further investigation in relation to 1MDB is still ongoing, based on the instruction by the attorney-general on Oct 24," Azalina (BN-Pengerang) said in a parliamentary written reply.

"Thus, any revelation on the details of the investigation can affect and cause prejudice to the ongoing investigation efforts by the police, and the matter should be respected by all parties," she said.

Azalina was responding to Gobind Singh Deo (DAP-Puchong) who asked about the status of the 1MDB probe, and if any delay existed in the process.

On April 12, the then inspector-general of police Khalid Abu Bakar claimed that the police had completed their probe into the state-owned entity, and submitted the investigation paper to the Attorney-General's Chambers.

In June, however, Khalid claimed that the AG had instructed police to further probe the issue, adding that as it was a civil case, "police would not interfere".

Last month, newly-minted police chief Mohamad Fuzi Harun said the 1MDB probe had been completed, and that there was no need for for the matter to be investigated further.

"No, no. We have no need (to investigate further), as the investigation has been completed, unless we have further instructions from the Public Accounts Committee or Cabinet on this matter," Fuzi told a press conference.

Soon after the committe revealed its findings on 1MDB in April 2016, the police formed an investigation team to probe the matter under Sections 409 and 420 of the Penal Code.

The AGC and the police have been under increased pressure to wrap up investigations after the US Department of Justice, on June 15, filed the latest in its series of 1MDB-related civil forfeiture suits.

Various opposition parties and civil society groups have criticised Malaysian authorities for supposed inaction, despite their counterparts in Singapore, Switzerland, the US and other countries, cracking down on those implicated in the 1MDB scandal.