Police official Roslan Bek Ahmad says three men with machetes hijacked the truck Wednesday as it was leaving a pig farm in northern Perak state. The driver was tied up and left by the roadside.
Roslan said Friday that police had recovered the vehicle in central Negri Sembilan state, but it was empty.
He said police believed the pigs were transferred to another truck to be sold in Malaysia. The pigs are worth an estimated 83,000 ringgit ($27,000).