There were no immediate information on any casualties from the blast on the main road to the international airport. Witnesses told AFP they saw the wreckage of a car and buses with windows smashed.
On Monday seven Taliban insurgents were killed after launching a gun and grenade attack on military buildings near the airport`s perimeter fence.
The response from Afghan security forces was widely praised as a sign of their growing professionalism as they take over responsibility from 100,000 US-led foreign combat troops who will pull out by the end of next year.
Kabul also came under attack on May 24, when Taliban militants launched a coordinated suicide and gun assault on a compound of the International Organisation for Migration.
A policeman, two civilians and all four militants died in that attack, and Afghan security forces won credit for an effective response.
(U.M016)
Editor: Priyambodo RH
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