The bullets fired at a Toyota Land Cruiser carrying two Japanese diplomats ambushed in Iraq last November were shot from a height of about 1 meter and a distance of no more than 4 meters, the Metropolitan Police Department said Monday.

The findings, based on a police inspection of the car, cast doubt on rumors that the shots were mistakenly fired by U.S. forces.

Katsuhiko Oku and Masamori Inoue and their Iraqi driver were assassinated on a road in northern Iraq. Their vehicle was shipped back to Japan last month for investigation.