A Taliban spokesman said the militant group claims the attack to target Afghan military forces.
An Iranian news agency PressTV reported that more than 12 people were killed in a bomb attack outside the Afghan Defense Ministry in Kabul on Saturday.
According to the report, several defense ministry personnel were killed and 20 others were also injured in the blast.
It is also reported that a Taliban spokesman said the militant group claims the attack to target Afghan military forces.
However, the Saturday blast came hours after 11 people were killed in a similar attack in eastern Afghanistan where a suicide attacker driving a motorcycle hit the entrance of the governor’s compound in Asadabad, the provincial capital of Kunar, near the border with Pakistan.
Since the withdrawal of foreign forces from the country in 2014, Afghanistan has been suffering a surge in attacks by the Taliban.