At least 10 militants have been killed during an operation against the Taliban in Helmand province on Monday, the officials said."The operations launched in Musa Qala district on Monday have left 10 militants dead and six others injured so far," Xinhua news agency quoted provincial spokesman, Mohammad Rasoul Zazai as saying.There were no casualties on security personnel, the official said.Taliban militants who have been fighting over the past couple of weeks to capture Musa Qala district, have not made any comment.