A football has gone missing from the sports cupboard. Chloe, Owen, Kira, and Harry were the last ones in the changing room. One of them took it. Exactly one of them is lying.

1. Chloe says: "Neither Kira nor I took the football."
2. Owen says: "I'm innocent."
3. Kira says: "Owen took the football."
4. Harry says: "Owen did it."