Quetta- Two people were killed in gas leakage causing suffocation at Sariab and firing at Sarai Namak in Quaid-e-Abad area today. Police said that some unknown persons gunned down the security official of a complex located at Sarai Namak in Quaid-e-Abad area and fled away. In another incident, a young man, Khudaidad suffocated to death as he went to sleep leaving the gas heater on. His body was handed over to the heirs after autopsy in Quetta Civil Hospital.