At least four Afghan National Army personnel were killed by “friendly fire” in the eastern province of Logar on Monday night, provincial police claim.

According to Logar police spokesman Shahpoor Ahmadzai, a US airstrike “mistakenly” targeted an army outpost when it came under Taliban attack and Afghan forces called for air support.
The outpost is located in the Bazar-e-Zekher area on the outskirts of Pul-e-Alam city, the center of Logar, Ahmadzai said. 
Six other ANA soldiers were wounded in the airstrike, police said. 
A spokesman for US Forces in Afghanistan responded:  "We are aware of reports a US airstrike conducted last night in support of Afghan forces may have resulted in Afghan National Army casualties. US and Afghan forces are working closely together to develop a shared understanding of this event.  A joint investigation is ongoing."
Also in Logar, provincial police said that a convoy of foreign forces was targeted by a car bomb explosion near a military camp Tuesday morning.
A US Forces spokesperson said: "A vehicle-borne IED targeted a U.S. convoy this morning in Logar province. Only the VBIED driver was killed. No U.S. or Coalition service members were wounded or killed in the attack. We are investigating the incident."