After the explosion, three armed men entered the site and started a gunfight with the soldiers, the spokesman said in statements to the Tolonews network.
The facility was seriously damaged by the blast, added Mangal.
According to local health authorities, the death toll could increase, but they said there were no civilian casualties among the dead.
Four attackers, in addition to the suicide bomber who detonated the explosive at the entrance to the base, were killed in the confrontation, local officials confirmed.
In a statement sent to the Afghan media, Taliban spokesman Zabihullah Mujahid claimed responsibility for the attack and said that ‘several soldiers and special forces officers were killed’ in the shooting.