US forces carried out an airstrike against Taliban militants on Wednesday, USFOR-A spokesman Colonel Sonny Leggett announced on Twitter. According to the statement, it was a defensive measure.
This is the first time US forces have carried out airstrikes against the militants since the sides signed an agreement in Doha.
Addressing the attack, the Russian Foreign Ministry stressed the airstrikes breached the deal between the Taliban and Washington.
Reports previously suggested that the Taliban had attacked two checkpoints in the city of Kunduz, killing at least 20 Afghan soldiers and police officers.
The incident occurred despite a considerable lull in tensions during the week after the Taliban and the United States struck a peace agreement on Saturday.
The deal envisages a phased withdrawal of US troops. Up to 5,000 Taliban prisoners are expected to be released from prisons by 10 March, while US forces are set to be slimmed down to 8,600 in the next 5 months. In return, the Taliban promised to prevent terrorist organisations from using Afghan territory to threaten the security of the US and its allies.