Taliban claims responsibility for Kabul explosions
There has been a large explosion in the centre of the Afghan capital, Kabul, followed by heavy gunfire.
Afghan Channel One TV quoted police as saying a group of assailants had entered the Directorate of the Afghan Public Protection Force (APPF).
A guesthouse used by staff of the International Organization for Migration (IOM) was hit in the blast, and two of its employees were injured.
A Taliban spokesman told the BBC that the guesthouse had been targeted.
Smoke was seen over the centre of the city and shop windows have been shattered by the explosion.
David Loyn reports from Kabul.