KHAIRPUR, Aug 21: Four persons were killed and seven others were injured when a wagon and an oil tanker collided head-on on the National Highway in the Tando Masti police station jurisdiction on Saturday.

Three of the killed were identified as Ameerzadi, Aliza, 2, and Fateh Mohammad Shar. The name of a killed woman could not be ascertained.

The injured, Ali Bux Khaskheli, Hakim Shaikh, Nadeem, Ali Raza, Hakimzadi, Rajab Ali and Ali Bux, were admitted to the Gambat Taluka Hospital. They are said to be in a critical condition.