Wildlife officials recovered bodies of 40 dead tiger cubs from a freezer in Thailand’s infamous Tiger Temple, during a raid to remove live animals. They raided the monastery after receiving reports of wildlife trafficking in the premises. A dead boar and body parts of other animals were also found in the freezer, said Tom Taylor, a member of the Wildlife Friends Foundation, who was at the temple during the raid.

So far, they have removed 40 of the 137 living tigers at the temple in an operation that started on Monday. Wildlife officials are now investigating whether the carcasses were evidence of the temple’s involvement in illegal wildlife trafficking. The monks at the temple have not commented on the matter yet, BBC reported.

The Buddhist monastery in Kanchanaburi, west of Bangkok, is a popular tourist attraction that offers visitors a chance to come in close contact with live tigers. It has been closed to the public since the raid.