Four members of local policemen were killed in a Taliban attack on a security outpost in the eastern province of Nangarhar on Monday night, a source said on Tuesday.
The attack took place in the Ghazi Baba area in Sorkh Rod district of Nangarhar, the source said.
Local officials have not commented on the incident.
Taliban has claimed responsibility for the attack.
The incident comes amidst a sharp increase in violence in the country ahead of a key conference in Turkey that is expected to change the direction of the Afghan peace efforts.
Figures by security officials show that at least 26 members of Afghan forces were killed and 30 more, including four civilians, were wounded in separate security incidents in six provinces in the last 24 hours.