Police in Ohio, USA are looking into the of a 17-year-old gorilla at Cincinnati Zoo. They will find out the about the killing of Harambe the gorilla after a four-year-old boy fell into the ape's . Video shows the gorilla dragging the boy through in his cage for ten minutes. Some people at the zoo said they were about the boy's . Other people said the gorilla was protecting the and that the animal was by the noise from the of people looking at it. Zookeepers decided to shoot the gorilla they were worried about the boy's life.
Animal rights groups are that the gorilla was killed. They say should have shot Harambe to make him sleep. Zookeepers said it takes long to make a 200kg gorilla sleep and that the boy was in . There is now an online that 300,000 people signed. They say the boy's mother and the zoo are for Harambe's death. People think the mother should have looked after her son . The mother said no parent can watch their children every . She said: "As a society, we are to judge how a parent could take their off their child."