The witnesses are said to have direct knowledge of the case, Sinar Harian reported, quoting a source familiar with the investigation.

“They were officially summoned by MACC to provide statements,” the source said.

“MACC is now working to identify those responsible for falsely declaring dangerous goods as household items.”

No arrests have been made so far, but the source did not rule out the possibility of future arrests should new leads or evidence surface.

“Further action will depend on ongoing developments and the analysis of collected evidence and intelligence,” the source said.

On Wednesday, it was reported that MACC was investigating a tip-off that dangerous goods were being smuggled into the country through cargo arriving at KLIA.

An MACC source said the anti-graft agency received information that there were elements of corruption in the alleged smuggling of dangerous goods falsely declared as household products.

The agency’s senior director of intelligence, Idris Zaharuddin, confirmed that the investigation is ongoing.