Officials said the explosion happened close to the police headquarters in Lashkargah in Helmand on Wednesday morning.
AVA- A suicide car bomber targeted an Afghan military convoy on Wednesday morning in the Helmand capital of Lashkargah city.
At least three military Humvees were badly damaged in the incident, which happened close to the police headquarters.
There have been no reports of casualties as yet.
No group has taken responsibility for the explosion.