At least three people were shot dead over an old enmity between two groups in Khairpur district of Sindh province, officials said on Monday. According to local police, one group belonging to the Shahani tribe attacked another group by opening indiscriminate fire at them. As a result, three people died on the spot while the assailants fled the scene. Later, police reached the area and brought the situation under control. The police also shifted the dead bodies to a nearby hospital to complete legal formalities.