KABUL, Afghanistan (AP) — Afghanistan's Interior Ministry spokesman says a suicide bomber has killed six policemen after exploding his devise amid a group of security officials monitoring protests by shopkeepers in eastern Kabul.

Najib Danish added that another 14 policemen were wounded in Thursday evening's bombing.

Wahid Mujro, a spokesman for the Health Ministry, said 15 wounded were treated at Kabul hospitals.

In a statement Thursday, President Ashraf Ghani called the attack "inhumane" and against the tenets of Islam.

There was no immediate claim of responsibility.