WASHINGTON, Oct. 1  A Blackwater USA employee under investigation in the killing last December of an Iraqi bodyguard in an off-duty confrontation was so drunk after fleeing the shooting that another group of guards took away the loaded pistol he was fumbling with, a report to a House committee said Monday.

The guards, employees of Triple Canopy, another private military contractor, returned the weapon to the Blackwater employee, who smelled of alcohol, and escorted him away from their guard post in the fortified Green Zone, the report said. Shortly afterward, the police detained the man, a 26-year-old firearms technician whom the report did not name, at the Blackwater camp inside the Green Zone, but determined he was too intoxicated to be interviewed.

Within 36 hours, the report said, Blackwater fired the man for possessing a firearm while drunk and arranged with the State Department to fly him back to the United States, angering Iraqi officials who said the Christmas Eve shooting was murder.

The acting ambassador at the United States Embassy in Baghdad suggested that Blackwater apologize for the shooting and pay the dead Iraqi man’s family $250,000, lest the Iraqi government bar Blackwater from working there, the report said. Blackwater eventually paid the family $15,000, according to the report, after an embassy diplomatic security official complained that the “crazy sums” proposed by the ambassador could encourage Iraqis to try to “get killed by our guys to financially guarantee their family’s future.”