MIRAMSHAH, Oct 13: Three paramilitary troops and two militants were killed, while another man was arrested after an exchange of fire in Shawal area in North Waziristan Agency on Wednesday evening, officials said. They said militants attacked a paramilitary post in Zoi Saidgei in Shawal valley, killing three troops, including a hawaldar. The security forces returned fire, in which two militants were killed.—Correspondent