Thirteen persons, including four security personnel, were killed in a suicide attack on a military convoy in Pakistan's North West Frontier Province (NWFP) Sunday night, police said. The attack took place on the Kanra Baba road near Mingora. More than 25 people, including 12 security persons and four women, were severely injured in the incident. The injured were rushed to Saidu Sharif hospitals. The Pakistan Army said that a suicide bomber who was riding a vehicle blew himself up on Kas road near Mehboob Petrol Pump in Mingora city.