Afghan officials say a suicide car bomber has attacked a convoy of foreign troops in the capital, Kabul, killing as many as 10 people.

Authorities say the bomber targeted a NATO bus Saturday in the Darulaman area.

An interior ministry spokesman said the dead included three civilians and a police officer.

A NATO statement says initial reports indicate “several” casualties among service members and local Afghan nationals.

In a separate incident Saturday in southern Afghanistan, NATO says two service members were killed when an individual wearing an Afghan National Army uniform turned his weapon on Afghan and coalition forces.

The international alliance says the shooter was killed in the incident.

Meanwhile, authorities say a female suicide bomber in eastern Afghanistan blew herself up outside the local branch of Afghanistan's spy agency.

Officials say the woman targeted the National Directorate of Security in Asadabad in Kunar province Saturday.

The French news agency says two guards were wounded in the attack.