Dera Ghazi Khan- Three people, including a woman, were killed and four others injured as gunman opened fire on Saturday night over a land dispute. Police said that gunman barged into a house located near Gadi Morh in Tehsil Taunsa and opened fire, killing three and injuring four others of a family. The injured were taken to Tehsil Headquarters Hospital for treatment. The police said that the victims and attackers belonged to a same clan and had an old enmity over a land dispute. The police have registered a case and launched an inquiry.