Police and the Department of Livestock Development raided a refrigerated warehouse in Samut Sakhon and seized 945 boxes of illegally imported pork weighing 21,473 kilogrammes, worth about 10 million baht.
Department of Special Investigation deputy director-general Pol Maj Yutthana Praedam said the police were acting on a tip-off.
After the raid authorities found out the owner of the warehouse had declared that another type of frozen product was being stored on site.
"We found that warehouse No 1 contained the smuggled pork meat," he said.
Authorites confiscated the pork and charged the warehouse owner with violating the Animal Epidemics Act.
False declaration of a product carries a maximum jail term of one year and fine of 20,000 baht, while hoarding pork can lead to a seven-year sentence and fine of up to 140,000 baht.
Traiyarit Temahiwong, director-general of the DSI, said the arrest was part of a government crackdown on the illegal trade of pork after low supply and outbreaks of African Swine Fever (ASF) sent prices soaring to high levels in recent months.
The authorities will continue inspections in other provinces and will not hesitate to take legal action against those found involved in pork hoarding or price gouging, he said.
In addition to the crackdown, the government has implemented a number of measures to address the hike in prices, including a three-month ban on exports of live pigs, along with a requirement for pig farmers and exporters to present product inventories for inspection.