Fifteen militants laid down their weapons, saying that others will follow suit soon.
Counter-narcotics personnel are destroying poppy crops throughout Nangarhar Province.
Fierce ground and air assaults from Afghan forces and the popular uprising movement in the province forced the Taliban to surrender, local officials say.
Tribal elders and local officials quickly de-escalated the situation, saying fighting along the border benefits only terrorists.
Afghan forces have confined ISIS to just a small presence in Achin District, enabling 4,000 families to return home, officials say.
It was the fourth outage in recent weeks caused by militant attacks, leaving Kabul residents frustrated and in the dark.
Civilian casualties from attacks by the Taliban, ISIS and other militants 'deliberately targeting' ordinary Afghans more than doubled in the first quarter of 2018 as compared to the same period last year.
Ravaged by air strikes and declining morale, ISIS in Afghanistan has responded to its increasingly desperate situation by manipulating society's most vulnerable members -- children.
Intensified military operations carried out by Afghan and coalition forces against ISIS in Jawzjan Province have fractured the group, according to Afghan officials.
Iran is enabling the Taliban's illegal drug trafficking to help fund the group and create insecurity in western Afghanistan, Afghan security officials and analysts say.
Participants of the meeting, which included government officials and members of the Afghan High Peace Council, declared the Taliban illegitimate in the eyes of Islam.
The replacement of Qari Hikmatullah with another Uzbek suggests the group is having difficulty replacing its leaders and is being forced to depend on foreign fighters with fluctuating loyalties.
Pressure builds on the Taliban to sue for peace as the grass-roots movement that began with a single tent in Lashkargah has since spread across the country.
A unified front and stronger relations are necessary to fight terrorism and bring sustainable peace to the region, analysts on both sides of the border say.
Dozens of militants from ISIS and Pakistani militant group Lashkar-e-Islam have been killed in recent clashes in Achin, Nazyan and Haska Mina districts.
Amrullah Saleh, the former head of Afghanistan's National Directorate of Security, is at the centre of a recent Sputnik report that he calls 'a complete lie'.
"We salute the Helmand citizens calling for peace and cease-fire," said Mohammad Karim Khalili, chairman of Afghanistan's High Peace Council.
The Taliban have abandoned previous red lines on the path to peace after realising they cannot defeat Afghan and coalition forces, observers say.