Officials in southwestern Pakistan say at least two militants died when security forces raided a house Thursday in Quetta, the capital of Baluchistan province.
Officials say militants opened fire and hurled hand grenades at the security forces in a clash that lasted about four hours, wounding at least 15 of the forces.
Authorities say the siege ended when the insurgents blew themselves up.
Baluchistan is home to various militant groups, including pro-Taliban factions, and Baluch separatists fighting a low-level insurgency in hopes of gaining political autonomy and a greater share of the profits from the region's natural resources.
Some information for this report was provided by AP, AFP and Reuters.