KABUL, Afghanistan (AP) - Afghan and coalition forces killed two insurgents in a firefight in central Afghanistan, while U.S. aircraft bombed and destroyed a cave where about six other rebels were believed hiding, the U.S. military said Tuesday. Ten rebels were also captured during the fighting in Uruzgan province on Monday, the military said in a statement. A subsequent search of the area led to the capture of eight other suspected rebels. The military said the insurgents fired on Afghan and coalition forces as they left a Chinook helicopter. Coalition forces returned fire, killing the two rebels. Six others then fled into a nearby cave. Attack aircraft were called in and the cave was bombed. The statement did not say whether the six were killed. After a winter lull, loyalists of Afghanistan's ousted Taliban regime and other militants opposed to the U.S.-backed government of President Hamid Karzai have ramped up their insurgency with a series of bombings and other attacks.