WOODLAND, Calif. (CBS13) –– More than 30 fish raised by Woodland High School students were tortured and killed over the weekend, according to authorities.

The Woodland Police Department said student found the remains of a Future Farmers of America project in four above-ground cement tanks stored in the agricultural area of campus.

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A total of 31 catfish were killed after someone poured liquid herbicide into all of the tanks and mutilated several fish with a hammer. No suspects have been identified by authorities.

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Two of the students who helped raise the fish, William Dinsdale and Ketric Andreasen, said they spent months and hundreds of their own dollars caring for the fish and hoped to sell the fish at the Yolo County Fair in just a few days.

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Authorities said the incident is being investigated as felony animal cruelty. Anyone with information on the crime is asked to contact the Woodland Police Department at (530) 666-2411.