Three separate explosions in the Afghan capital Kabul have killed at least five people and wounded two others.
It was not immediately clear what caused the blasts and no group immediately said they were responsible.
Kabul police spokesman Ferdaws Faramarz said the first two explosions took place 15 minutes apart, with a third two hours later.
The first blast targeted a civilian car, wounding both people inside the vehicle.
The second explosion targeted a car in a north-western Kabul neighbourhood in which national army soldiers were travelling, killing two soldiers.
A civilian passerby was also killed.
The third explosion destroyed a police car in western Kabul, killing two police officers.
Kabul police said investigations were under way.
The majority of bomb attacks in Kabul in recent months have been sticky bombs – explosive devices with magnets that are attached to vehicles and detonated by remote control or timer.
Afghanistan has seen a spike in bombings, targeted killings and violence as peace negotiations between the Taliban and the Afghan government have stalled.
The so-called Islamic State group's local affiliate has said it was responsible for some of the attacks, but many go unclaimed, with the Afghan government putting the blame on the Taliban.
The insurgents have denied responsibility for most of the attacks.
Earlier this week, NATO's Secretary General Jens Stoltenburg, said there had been "no final decision" on the alliance's future presence in Afghanistan.
He also urged the Taliban to reduce violence in Afghanistan, after a notable reduction against allied forces has seen a surge in attacks against Afghan forces and civilians.
There are currently about 750 UK personnel in Afghanistan in a non-combat role as part of a NATO mission.
The number of US personnel in the country is 2,500, the lowest it has been since 2001.
Cover image: Afghan flag flies over an observation post, Pekha Valley, Achin District, Nangarhar Province, Afghanistan (Picture: US Army).