Insurgents in Afghanistan have killed three NATO troops and two Afghan civilians in separate attacks, while a NATO airstrike killed dozens of Taliban militants in the country's east.

NATO said the three coalition troops were killed Sunday in a bomb attack in eastern Afghanistan. It did not provide further details.

In another attack, insurgents opened fire on members of an Afghan family at a cemetery in the southern town of Lashkar Gah, killing two and wounding seven, including women and children. The Afghans were visiting the graves of relatives to mark the Eid al-Fitr festival that ends the Muslim fasting month of Ramadan.

NATO said it carried out an airstrike on Taliban militants engaging in hostile activity in the eastern province of Kunar on Saturday, killing dozens of heavily-armed fighters including a local Taliban leader. It said no civilians were harmed in the airstrike.

In a speech to mark Sunday's Eid festivities, Afghan President Hamid Karzai called on Taliban leaders to renounce violence against civilians perpetrated in the name of the Islamist group. He said the enemies of Islam committed “cruel” attacks during Ramadan and will one day be held accountable.

NATO's top commander in Afghanistan, U.S. General John Allen, said thousands of insurgents already have renounced violence and returned home to find honor and dignity in their communities. In a holiday greeting, General Allen also said Afghanistan's more than 300,000 security personnel have become “capable and professional” and soon will have primary responsibility for areas where the majority of Afghans live.