Two persons were arrested and remanded to judicial custody for fishing illegally in the Oussudu Lake.
Deputy Conservator of Forests Sathyamurthy told The Hindu that a team of 30 Forest officials and 15 police officers conducted a raid at the lake on Wednesday morning.
They found Suresh (30) and Sathish (24) from Vanur fishing there.
As the lake has been declared a sanctuary, fishing is banned.
The two were booked under Section 51 of the Wildlife Protection Act. This offence carries a six month imprisonment.
The department also seized a boat, a catamaran, 50kg of fish and 10 nets.