Fighter jets bombed Tehreek-e-Taliban (TTP) Pakistan strongholds of Makeen and Nawazkot in South Waziristan on Tuesday -- killing six Taliban and injuring three others, said military sources. The strikes came a day after TTP chief Hakeemullah Mehsud vowed to launch attacks against the security forces in the country. "The airstrikes are part of a major offensive being planned against the terror network," the sources told Daily Times. According to sources in Wana, the TTP holds considerable sway in both Makeen and Nawazkot, and the group has established its command-and-control structure there. Locals said government forces were amassing around Mehsud areas in South Waziristan, and the imminent operation would involve large-scale bombings.