Forty dead tiger cubs have been uncovered in a freezer at a Thai Buddhist Temple.

Thai wildlife and security officials began raiding the Tiger Temple on Monday, and are in the process of removing the 137 live tigers from the location. They are being transported to three animal refuge centers in the country. Government officials expect the operation to last a whole week.

The Tiger Temple is a popular tourist destination and promotes itself as a wildlife sanctuary. However in recent years it has been investigated for wildlife trafficking and animal abuse.