GUJRANWALA -A woman was killed and five others including two children were injured when a roof collapsed as a result of a cylinder blast on Friday.  Saima, wife of Khuram Shahzad, a resident of Kamoke was busy cooking when the gas cylinder exploded due to which roof of the room collapsed. Resultantly Saima died on the spot while Khuram Shahzad, Shafqat, Irfan and two children identified as Meerab and Ali Jan received injuries. They were rushed to DHQ Hospital.