Bloemfontein – A 30-year-old man was allegedly stabbed and killed by his 16-year-old nephew during an argument over house keys, Free State police said on Tuesday. The incident happened on Friday at Stilte Park in Meloding, said Sergeant Mamello MokhuoaneThe suspect allegedly took out a knife and stabbed his uncle before fleeing the scene on foot.The man was certified dead on scene. A case of murder was registered for further investigation. Mokhuoane said the 16-year-old was still at large. Anyone with information was asked to contact Detective Constable Jafta Mohapi on 071 001 3994.