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Foreign air strike kills 2 Afghan troops-ministry
"The Defence Ministry condemns this incident and a joint delegation has been created to investigate the cause and will announce its findings," the ministry said in a statement.
The NATO-led International Security Assistance Force (ISAF) said a team had been sent to investigate the incident, which happened on Tuesday, but declined to comment further.
(Reporting by Jonathon Burch; Editing by Emma Graham-Harrison)