Rajaji National Park officials arrested three persons from the Kansrao forest area and recovered about 30 kg of pangolin scales. The officials described it as one of the biggest catch of pangolin scales in the country.

Pangolins are a highly endangered species and use of its scales for medical or other purposes is banned internationally.

They are, however, said to be used illegally to treat arthritis and stomach ailments in countries like China and Thailand.

The officials said they launched a combing operation after recovering several SIM cards and mobile phones from the Kansrao forests. This paid off with the arrest of three locals with gunny bags containing the pangolin scales.

The three revealed that a goldsmith of Doiwala area, near here, offered to buy any amount of pangolin scales they could get.