Two NATO officers in Afghanistan have been killed by gunfire inside the interior ministry in the capital, Kabul.
The incident took place on Saturday in a control centre used by NATO advisers.
The two dead are American military officers, believed to be a colonel and a major.
Brigadier General Carsten Jacobson, has confirmed the shooting.
Officials said the ministry was put in lock-down afterwards.
The Taliban says it carried out the shooting in retaliation for the burning of copies of the Koran at the Bagram air base near Kabul last week.
The BBC reports more than 20 have died since the protests began on Tuesday.