The 205th Atal Corps in a statement said the terrorists had planted an Improvised Explosive Device on a roadside in Qalat, the provincial capital of Zabul.
The statement further added that the terrorists had planted the roadside bomb to target the Afghan National Defense and Security Forces.
However, the 205th Atal Corps said the explosion killed three children and wounded two others who were later transported to health facilities by security forces.
The anti-government armed militants including Taliban have not commented regarding the incident so far.
Taliban and other armed militants frequently use improvised explosive devices to target the security forces but majority of such attacks inflict casualties on ordinary civilians.