KOLKATA, INDIA - A chimpanzee in Kolkata zoo took revenge on visitors by hurling stones at them, injuring a mother and her six-year-old daughter, newspapers reported Monday.

Babu, a male chimpanzee, was being teased by the packed Sunday afternoon crowds when he hit Mithu Mondal, 30, and her daughter Nikita.

"Some of the visitors threw pieces of bricks at a chimpanzee named Babu. He became furious and retaliated by throwing stones at them," S.K Chowdhury, the director of the zoo, told the Calcutta Telegraph.