Authorities on the Indian ocean island are battling to contain the theft of zebus by so-called "dahalos", tribesmen whose one-time tradition of stealing cattle to prove their manhood has reached increasingly criminal dimensions and left hundreds dead in recent years.
"Fifteen dahalos were killed and 105 stolen zebus retrieved, after the encounter between the gendarmerie and dahalos yesterday (Friday)," said gendarmerie spokesman Tsahatsy Germont Fidelis.
The incident happened in the Vangaindrano district on the island's southeastern part after the rustlers stole the animals in the morning, Fidelis told AFP.
Hundreds of people have lost their lives on the island nation since 2012 in clashes between the rustlers, villagers and security forces.
The government has deployed special forces to try curb the crime, but with limited success so far.