Five children from the same family died on their way to hospital after losing consciousness in Khyber district, police said.
Police said seven children lost consciousness in Qaziano Kalay, a village within the jurisdiction of the Bazaar Zakha Khel police station. The children were rushed to hospital, but five died en route. The other two are receiving treatment at a hospital in Peshawar.
Police said all five children who died were under the age of five. Hayatabad Medical Complex officials said tests were underway to determine what caused the illness.
The family said the children had been feeling weak for several days. A medical team will visit Qaziano Kalay to investigate.
