Officials say that a suicide bomber has killed three army officers and wounded seven others in Kabul, a day after two such attacks killed 11.

A district police chief, Hafeiz Khan, said the suicide bomber blew himself up Thursday morning in front of an army minibus that was taking the soldiers to work.

Taliban spokesman Zabiullha Mhujahid sent a text message taking responsibility for the attack.

On Wednesday, Taliban suicide bombers struck two buses carrying Afghan soldiers in Kabul, killing 11 people and wounding about 20 others.