At least four militants killed and four security personnel including a woman injured during exchange of firing between the security forces and militants here in Ummerzai Nishanabad an area of Charsadda on Friday. According to sources, police gained tip off from Malang Khan arrested in case of Mingora bomb blast and conducted raid at the house located in Ummerzai Nishanabad. The militants in the house opened indiscriminate firing at the security forces on which the security forces retaliated and killed Jan Bacha, Taif Bacha, Mujahid Bacha and Tahir Bacha while the four security personnel including a woman got injured during the firing. The injured have been shifted to CMH Mardan while the dead bodies have been shifted to District headquarter hospital. The injured woman has been brought to Charsadda hospital. The security forces also claimed to seize suicide jackets and explosion from their possession.