Afghan female police officer shoots dead US military adviser Afghan police at the entrance to their headquarters in Kabul. An Afghan female police officer has shot dead a US adviser in police headquarters in Kabul, the first attack on foreigners by a woman serving in the national security forces. "Today at 10am a female police constable opened fire on an American adviser with a pistol," Daoud Amin, deputy provincial police chief for Kabul said on Monday. He was seriously wounded, they took him to hospital and he passed away there. The woman has been arrested, and Amin said police were investigating the shooting, the latest in a string of insider attacks on foreign troops by Afghan police and soldiers that they mentor and fight alongside. There have been very few female combatants among insurgent ranks in conservative and male-dominated Afghanistan, although the Taliban did not immediately claim responsibility for the attack. A spokesman said the group was investigating. The dead man, who has not been named, worked for the Nato-led mission in Afghanistan. Nato confirmed the shooting but declined to comment on his nationality or precise role. More than 60 soldiers and civilian advisers have been killed in 46 shootings this year, compared with 35 deaths in all of 2011. They account for nearly one in six of all Nato casualties in Afghanistan, and risk undermining the entire mission as it shifts towards a bigger focus on training. However, it was unprecedented to have a woman pulling the trigger and unusual to have an attack at such a high-level office, although two officers were shot dead in the interior ministry at the start of the year. The woman was confused and weeping, according to a police source from a gender awareness section of the interior ministry, which supervises the police. "She is crying and saying 'what have I done,'" Reuters news agency quoted the source saying. Nato commanders argue that the attackers account for the tiniest portion of security forces, now more than 300,000 strong, and many shootings are driven by personal grudges rather than ideology. In a bid to tackle the growing problem there are now intelligence agents undercover in many Afghan army units to seek out insurgent sympathisers, with Nato creating a system of "guardian angel" - soldiers who watch over fellow troops when they are with armed Afghan forces. Mokhtar Amiri contributed reporting