The al-Qaida-linked Nusra Front acknowledged that its members were involved in the killing of Druze villagers Syria this week, saying they had violated orders and would face justice.Twenty Druze villagers were reportedly killed in the village of Qalb Loze in Idlib province on Wednesday when Nusra Front members opened fire in an incident that spiraled from their attempt to confiscate a house.In a statement, the Nusra Front said it had received with "great sorrow" news of the incident in which "a number of Nusra Front members" had taken part without consulting their leaders.