The security forces repulsed militants attack at a convoy in Kam Sirobi area of North Waziristan tribal region, sources said. The forces convoy was travelling from Dosli to Miran Shah when it was attacked at Kam Sirobi area, sources said adding that no casualties have been reported in the incident. Indefinite curfew has been imposed in Miran Shah, tehsil Dosli, Garyom and Razmik. There were reports that US spy planes hovering over Makeen and Ladha regions in South Waziristan. The forces have closed the main highway between North and South Waziristan regions.