1MDB had brushed off allegations that the company was used in an elaborate scheme to siphon off US$1.83 billion, as reported by The Edge Financial Daily today.
"We are surprised that these old and unproven allegations are being recycled yet again, when in fact there are multiple ongoing investigations being conducted by the lawful authorities on the issues raised previously.
"Any party which can assist investigators should do so under the purview of the law, without resorting to such irresponsible and unnecessary sensationalism," said the company.
The Edge had produced a detailed report today chronicling how it believed 1MDB's joint-venture with PetroSaudi International Ltd (PSI) was used to eventually launder US$1.83 billion.
The business paper said that this was likely its last report on 1MDB and promised to share its findings with Malaysian investigators.
Previously, The Edge Media Group had been issued a show-cause letter by the Home Ministry, accusing the company of publishing articles based on information obtained from dubious sources.