At least seven civilians are killed in a blast inside a mosque in eastern Afghanistan.<br/> <br />The overnight attack came shortly after a joint NATO Afghan operation in the area killed four Taliban fighters.<br/> <br />A taliban spokesman said Americans used air strikes to attack the mosque, but coalition forces saius there was no use of airpower in the area.<br/> <br />(SOUNDBITE) (Pashto) RESIDENT HAJI ROHULLAH SAYING:<br/> <br />"All those people killed were either students or teachers. They were all civilians; there were no armed men here."<br/> <br />NATO confirmed that a joint special forces team conducted a night raid in the area, and was aware of reports of an explosion once the team had left. NATO said no civilians were killed in the joint operation.