Carlos Quinteros was a Guatemala

Guatemala

Guatemala is a country in Central America bordered by Mexico to the north and west, the Pacific Ocean to the southwest, Belize to the northeast, the Caribbean to the east, and Honduras and El Salvador to the southeast...

n communist. Quinteros was a member of the Guatemalan Party of Labour

Guatemalan Party of Labour

The Guatemalan Party of Labour was a communist party in Guatemala. It existed from 1949 to 1998. It gained prominence during the government of Col. Jacobo Arbenz...

 (PGT). When PGT split in 1978 he became a leading figure in the more militant PGT-NDN break-away group. However, he soon left PGT-NDN and joined Guatemalan Party of Labour - Communist Party

Guatemalan Party of Labour - Communist Party

Guatemalan Party of Labour – Communist Party was an underground communist party in Guatemala. PGT-PC was formed in 1978 as a split from the Guatemalan Party of Labour ....

(PGT-PC). Soon, however he was expelled from PGT-PC.

In 1983 Quinteros was captured by the state forces. He soon turned into a collaborator and started providing information about his former comrades in PGT, PGT-NDN, PGT-PC. In total, around 70 people were captured and killed. In some cases Quinteros himself took part in the executions. PGT-PC was essentially wiped out in this process and PGT-NDN was reduced to the party leader and closest associates in exile.

Quinteros was eventually killed by his former comrades.

This events are told in the book El Filo (1993). http://www.sae.gob.gt/pdfs/libro.pdf