"Last night, the Taliban stormed Afghan forces' outposts in Imam Sahib District, killing 20 soldiers, with heavy fighting ongoing", the source stated.
The Taliban released a statement on social media confirming that the group had continued attacks on Afghan troops across the country, claiming high casualties among Afghan government forces.
The Afghan government, for its part, has also released a statement claiming casualties for the Taliban.
The news comes just a day after both sides issued a joint declaration following an intra-Afghan meeting in the Qatari capital of Doha, agreeing that efforts to de-escalate the conflict should be made to prevent civilian casualties.
The meeting was brokered by Germany and Qatar and attended by Afghan politicians, civil society activists as well as representatives of the Taliban.