PULI ALAM : A NATO airstrike in eastern Afghanistan on Thursday accidentally killed five Afghan soldiers, government officials said, while the coalition said it was investigating reports of the incident. “At 3:30am this morning, due to a NATO airstrike in Charkh district, Logar province, five service members of the Afghan national army were martyred and eight others were wounded,” defence ministry spokesman Zahir Azimi said on his Twitter account.