The military in Peru have blamed the Shining Path guerrilla group for an ambush in which two soldiers were killed and five injured, BBC reported.
They were patrolling in a coca-growing region of Vizcatan in south-eastern Peru when they came under attack.
Last week 15 people including two civilians were killed in the region in an attack blamed on the group.
In recent weeks the army has attempted to dislodge an estimated 300 rebels in the south-east involved in cocaine.
The Maoist Shining Path movement waged a major insurgency in the 1980s and 1990s but was thought largely to have disbanded after the capture of leader Abimael Guzman in 1992.
No rebel deaths were reported in the latest attack, which occurred on Tuesday morning in the Apurimac river valley.