CHARSADDA A husband was killed and wife seriously injured when unknown persons threw a hand grenade at their house late on Saturday night. Jehanzib was killed and his wife was seriously injured when unknown persons threw a hand grenade to their house in the suburban area of Charsadda district. According to the local police, the incident occurred about 11:30pm at Saturday night in Turangzai area of the district and as a result one Jehanzib was killed and his wife received fatal injuries and has been shifted to Lady Reading Hospital (LRH), Peshawar, for treatment. Police have started investigation.