Pakistan rejects US air strike deaths report
The report concluded both sides had made mistakes, blaming poor information and inadequate co-ordination between US and Pakistani forces on the ground.
The Pakistani military said the report was "short on facts".
Pakistan closed its border with Afghanistan after the incident, cutting off vital Nato supply lines.
In a short statement, the Pakistani military said it did not agree with the findings of the report "as being reported in the media".
"The inquiry report is short on facts," it said.
The statement said the military would present a more detailed response "as and when the formal report is received".
Islamabad, a vital partner in the fight against militants in the region, has demanded a formal US apology.
In its report, the US military admitted it bore significant responsibility for the deaths in Mohmand tribal agency on 26 November, and expressed "deep regret" for the "tragic loss of life".
"Inadequate co-ordination by US and Pakistani military officers operating through the border co-ordination centre - including our reliance on incorrect mapping information shared with the Pakistani liaison officer - resulted in a misunderstanding about the true location of Pakistani military units," it said.
"This, coupled with other gaps in information about the activities and placement of units from both sides, contributed to the tragic result."
In a news briefing later at the Pentagon, spokesman George Little said: "For the loss of life and for the lack of proper co-ordination between US and Pakistani forces that contributed to those losses we express our deepest regret.
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