"As part of the fight against terrorism, army troops killed a terrorist on Friday afternoon and retrieved his gun in Amrouna area in Ain Defla province, 150 km northwest of Algiers," the ministry said in a statement.
The troops also killed a terrorist on Thursday in the same area and seized a gun and ammunition.
The security situation in Algeria has remarkably improved in the last decade, but clashes between security forces and terrorist groups are still occasionally reported.
Besides, the army discovered on Thursday a weapon bunker containing a Strela-2M shoulder-fired anti-aircraft missile system and six BM-21 missiles near the border with Mali.
Algeria has also deployed tens of thousands of troops on the southern and eastern borders in a bid to thwart the inflow of terrorists and arms amid instability in neighboring Mali and Libya.