A roadside bomb in southern Afghanistan killed three International Security Assistance Force (ISAF) members Tuesday, NATO said.
The victims' nationalities were not identified.
Elsewhere in two different parts of Afghanistan, additional roadside bombings killed five people, including a local police commander credited with reducing the number of insurgent attacks in his area, officials said.
In the southern province of Kandahar, a bomb planted by the Taliban in the Shah Wali Kot district killed three civilians and wounded five, said Jawed Faisal, a spokesman for the provincial governor.
In the northern province of Kunduz, which borders Tajikistan, a roadside bomb destroyed a car carrying a local police commander, his driver and two other police officers as they traveled toward Kunduz City, said Abdul Nazar, a local council member.
Nazar said the blast in Archi district killed the driver and the commander, Miran, and wounded the two officers. Like many Afghans, Miran only used one name.
Sarwar Hussaini, a spokesman for chief of police in Kunduz province, blamed the Taliban for the attack. He said it was retaliation for Miran's success at improving security in his district.
The Associated Press contributed to this report.