MUZAFFARABAD: At least two children died while two others critically injured in a toy bomb explosion at Kharal Maldialan near Bagh Azad Kashmir, some 80 kilometers from here on Thursday.According to police, the children were playing with a toy and suddenly it exploded killing one brother and sister while their mother and another sister sustained severe injuries.The children, who died were identified as Muhammad Moheed and Shabana Bibi ,they added.