The 203rd Thunder Corps of the Afghan Military in the Southeast said the incident has taken place inside a mosque in the restive Andar district.
The source further added that an IED went off among the militants in Ismail Kabuli mosque in Andar district, leaving at least 11 militants dead.
In the meantime, the Thunder Corps says at least 24 Improvised Explosive Devices were discovered and defused during separate operations in Logar and Ghazni provinces.
The anti-government armed militant groups including Taliban militants have not commented regarding the report so far.
The anti-government armed militant groups frequently use explosives materials for the roadside bombings and car bombings to target the government staff and security personnel.
However, in majority of such incidents the ordinary civilians are targeted besides such bombings incur casualties to the security personnel and in some cases the Taliban militants themselves are killed or wounded.
A total of 10,453 civilian casualties – 3,438 people killed and 7,015 injured – were documented in the 2017 Annual Report released last month by the UN Assistance Mission in Afghanistan (UNAMA) and the UN Human Rights Office.
The report further added that the high number of casualties to the civilians were inflicted by suicide bombings and other attacks using improvised explosive devices (IEDs).