Two American troops were killed and six others wounded by an Afghan soldier armed with a machine gun, the US military confirmed Sunday.
A senior US defence official in Afghanistan's capital city Kabul on Friday said Islamic State fighters were hiding among pine nut harvesters when a US drone strike in eastern Afghanistan killed at least 32 people.
A suicide bomber on foot targeted a wedding party in Afghanistan's eastern province of Nangarhar on Friday, killing at least five people and injuring 40, local officials said.
Ten others were wounded in the second attack in Jalalabad city in as many days, Nangarhar provincial governor spokesman Attaullah Khogyani said.
The death toll in a suicide bombing claimed by Islamic State during a ceasefire celebration in Afghanistan's eastern Nangarhar province has climbed to 36, an official said on Sunday.
A car bomb killed at least 26 people at a gathering of Taliban and Afghan armed forces in the eastern city of Nangarhar on Saturday, an official said, as soldiers and militants celebrated an unprecedented Eid ceasefire.
The incident occurred on Thursday as US soldiers were patrolling in the Islamic State-stronghold of Achin in Nangarhar province, according to Hakim Khan, a commander of the government militia involved in the incident.
One US service member was killed and four others injured during a "combat engagement" in the eastern Afghan province of Nangarhar, the US military said in a statement on Tuesday.
A suicide bomber struck at a crowd of people in the eastern Afghan province of Nangarhar on Thursday killing at least eight, officials said, in an attack that underscored worsening security.
Several senior members of Islamic State's central Asian affiliate were killed in a US air strike in Afghanistan, officials said on Sunday.