Pakistani security forces killed at least 40 militants when they repelled an attack on a paramilitary camp in the South Waziristan region on the Afghan border overnight, Reuters reported on Sunday. "Militants came in force and attacked a paramilitary camp and fighting lasted for eight hours. At least 40 militants were killed while four soldiers died," said an intelligence official in the region. Another security agency official put the militant toll even higher. There was no independent confirmation of the casualty estimates.