KARACHI: A 12-year-old boy and a 35-year-old balloon seller were killed and three others, including two girls, were injured when a balloon inflating cylinder exploded in Sohrab Goth area of ​​Karachi on Saturday, Geo News reported. According to Sohrab Goth DSP Sohail Faiz, the tragic incident took place in Junejo Colony area of ​​Sohrab Goth. He said that the balloon seller used to reach the area to sell balloons by placing cylinders in a rickshaw. According to police, a 12-year-old boy and a balloon seller were killed on the spot while three others were injured. According to Edhi Foundation spokesperson, the cylinder in the rickshaw was inflating balloons. Volunteers have transported the bodies of a child and a 35-year-old balloon seller to Abbasi Shaheed Hospital, while two minor girls were among the injured.The injured have been shifted to private hospital in Gulshan-e-Iqbal while 2 injured have been shifted to Abbasi Shaheed Hospital.