A car bomb exploded on Sunday on a road near the main airport in Afghanistan
's capital, police said, apparently targeting NATO troops in the latest attack in the city.
There was no immediate word on any casualties.
Police spokesman Ebadullah Karimi said a suicide bomber in a Toyota Corolla rammed a convoy of foreign troops on the road from Kabul's main airport to a NATO military installation nearby.
He could give no further details.
There was no immediate claim of responsibility, though Taliban insurgents have launched a wave of attacks around the country since the drawdown of most foreign troops last year to a small training force.