A gas cylinder exploded in a house in Gujranwala on Friday morning that killed a girl child and injured four persons of a family. According to rescue sources, the incident occurred in a house in Samanabad area of Gujranwala when a woman was preparing breakfast. Due to gas leakage, a blast occurred and fire engulfed the area killing a girl on the spot. Four persons including a woman and her two daughters were also injured in the incident who were shifted to District Headquarter Hospital.