Malaysian police have arrested three suspects involved in the theft of some 725,000 condoms, which have not yet been found.
Mohamad Shukri Dahlan, the police chief of Malaysia's northern Perak state, says the heist was "an inside job".
He said the suspects work for the firm responsible for transporting the condoms from the factory to the port, where they were to be shipped to Japan.
Sagami Rubber Industries, one of Japan's biggest condom makers, said 85,000 boxes of ultra-thin condoms vanished last month in the heist.
The merchandise was worth 1.5 million dollars (£927,500).
The suspects intended to sell the condoms in Malaysia, but Mohamad Shukri said they had probably not succeeded.