The Partisan sources blamed Chetniks for his death , while Western sources initially blamed Partisans and later accepted possibility that Atherton was killed by Chetniks .
Atherton disappeared after he escaped Partisan headquarter in March 1942 with his men .
The Partisan sources blamed Chetniks for Atherton 's death , while Western sources initially Partisan Partisans and later accepted possibility Atherton Atherton was killed by Chetniks .
Atherton disappeared after he escaped Partisan headquarter in March 1942 with his men .