Gunmen have killed a member of the country's peace council for dialogue with the Taliban in the southern city of Kandahar.
Officials said Sheirin Agha was shot dead while praying at a mosque late on February 12.
President Ashraf Ghani condemned the attack in a statement.
No group immediately claimed responsibility for the killing.
In the past, the Taliban have attacked members of the High Peace Council, a government-appointed group created by former President Hamid Karzai to negotiate with the militants.
Taliban militants have stepped up their attacks on Afghan security forces in recent months.
U.S. and NATO forces formally ended their combat mission at the end of 2014, with Afghan troops taking charge of the country's security.