Clashes between tribesmen of Pewar village and the Kharoti Mangal tribes have again erupted in Kurram Agency following the expiry of a 10-day ceasefire, resulting in three people being critically injured.Political administration sources said both groups were using heavy weapons, including mortars, rockets and automatic machine guns. They said Mangal Kharoti activists had allegedly attacked the Tori tribe during a jirga before the expiry of the ceasefire deadline, triggering a gunbattle at the Pewar and Tangi areas near the Pak-Afghan border. Sources said the reason behind the conflict was a dispute over the ownership of a house and demands for the construction of a new road.