The Guardia Civil is investigating an incident in Conil de la Frontera, Cádiz province, in which a 15-year-old youth allegedly stabbed his 14-year-old brother in the stomach.
Police were called when local residents reported an act of aggression between the two siblings taking place on the street. The 15-year-old apparently stabbed his younger brother in the abdomen.
The alleged attacker fled the scene when the police arrived but was finally arrested. The victim was transferred to hospital.