The US military is set to release a 3,000 page investigation Wednesday into an air strike on a Doctors Without Borders hospital in the northern Afghan city of Kunduz which killed at least 30 people.
Here is a timeline of developments following the bombing of the hospital on October 3.
October 3
NATO says a US air strike at 2:15 am local time "may have" hit a hospital run by the medical charity Doctors Without Borders (MSF) in the embattled Afghan city of Kunduz.
"The strike may have resulted in collateral damage to a nearby medical facility. This incident is under investigation," the coalition says.
MSF meanwhile says its trauma centre was struck "several times".
The strike is described as "inexcusable" and possibly criminal by UN rights chief Zeid Ra'ad Al Hussein.
October 4
MSF shuts down its operations in the city and demands an independent investigation into what it calls a war crime. US President Barack Obama meanwhile offers his "deepest condolences" over the attack.
October 5
General John Campbell, the top American commander in Afghanistan, says Afghan forces called in a US air strike on a Kunduz hospital.
"An air strike was then called to eliminate the Taliban threat and several civilians were accidentally struck," he tells reporters.
His remarks prompt MSF to blast "discrepancies" in US accounts of the strike, which it says caused patients to burn to death in their beds and reduced the hospital to smouldering rubble.
October 6
Campbell testifies before the US Senate Armed Services Committee that the hospital was "mistakenly struck", adding that while it was the Afghans who called for the strike, ultimately the decision to launch rested with Americans.
"To be clear, the decision to provide aerial fire was a US decision made within the US chain of command," he says.
October 7
US President Barack Obama calls MSF chief Joanne Liu "to apologise and express his condolences," White House spokesman Josh Earnest tells reporters.
MSF meanwhile demands an international probe.
"We cannot rely on an internal military investigation," Liu tells reporters, insisting that an "international humanitarian fact-finding commission" should probe the attack.
"This was not just an attack on our hospital, it was an attack on the Geneva Conventions," Liu says.
November 5
MSF releases its own harrowing report into the attack, describing patients burning in their beds, medical staff decapitated by shrapnel and a nurse who suffered a "traumatic amputation" in the attack.
People were shot at, apparently from the plane, as they tried to flee the burning building, with some eyewitnesses cited in the report saying the shooting appeared to follow those on the run.
"The view from inside the hospital is that this attack was conducted with a purpose to kill and destroy," MSF general director Christopher Stokes said in Kabul.
The MSF report also details increasingly frantic efforts by its staff to reach NATO and US officials to stop the attack.