At least 10 militants were killed during military operations and clashes across Afghanistan within a day, officials said on Saturday."Afghan National Security Forces (ANSF) conducted several clean-up operations in surrounding areas of Nangarhar, Kapisa, Ghazni, Paktia, Kandahar, Uruzgan, Badghis, Takhar and Helmand provinces within a day. As a result, six armed militants were killed, two wounded and seven others detained by the ANSF," Xinhua news agency quoted an official as saying.The security force also found and seized weapons, the official said, adding that three army personnel also lost their lives in separate incidents over the same period.Four militants were also killed and three others were wounded after army soldiers repelled a militant attack on security checkpoints in Kunduz's Imam Sahib district on Friday.