in 1976. He was one of the far-right mercenaries hired by Spanish secret services to take part in the 1976 Montejurra massacre against left-wing Carlist Party

Carlist Party

The Carlist Party is a Spanish political party that considers itself as a successor to the historical tradition of Carlism. The party was founded in 1969, although it remained illegal until 1977, following the death of the dictator Franco and the democratisation of Spain.The secretary-general of...

. Since then, Cherid remained related to the members of the intelligence services belonging to the Spanish secret services and security forces that organized an illegal war against ETA

ETA

ETA , an acronym for Euskadi Ta Askatasuna is an armed Basque nationalist and separatist organization. The group was founded in 1959 and has since evolved from a group promoting traditional Basque culture to a paramilitary group with the goal of gaining independence for the Greater Basque Country...

 in the French Basque Country, under different denominations (Antiterrorismo ETA, Batallón Vasco Español

Batallón Vasco Español

The Batallón Vasco Español was a Spanish Basque right-wing paramilitary group active from 1975 to 1981, primarily in French Basque Country.The BVE employed violence mainly against Basque separatist groups....

 or AAA death squads) during Union of the Democratic Centre administrations. He took part in the 1978 assassination of Argala, an etarra

ETA

ETA , an acronym for Euskadi Ta Askatasuna is an armed Basque nationalist and separatist organization. The group was founded in 1959 and has since evolved from a group promoting traditional Basque culture to a paramilitary group with the goal of gaining independence for the Greater Basque Country...

who had participated to the 1973 assassination of Francisco Franco

Francisco Franco

Francisco Franco y Bahamonde was a Spanish general, dictator and head of state of Spain from October 1936 , and de facto regent of the nominally restored Kingdom of Spain from 1947 until his death in November, 1975...

's Prime minister Luis Carrero Blanco

Luis Carrero Blanco

Don Luis Carrero Blanco, 1st Duke of Carrero Blanco, Grandee of Spain was a Spanish admiral and long-time confidant of dictator Francisco Franco.- Biography :...

. This time, however, no organization claimed responsibility for the killing. In 1979, he led a squad that attempted unsuccessfully to murder an ETA activist, Txomin, in Biarritz. Some months later, his squad murdered another ETA activist, Enrique Álvarez, "Korta", in Bayonne

Bayonne

Bayonne is a city and commune in south-western France at the confluence of the Nive and Adour rivers, in the Pyrénées-Atlantiques department, of which it is a sub-prefecture...

. On December 31, 1980, Cherid killed in Biarritz

Biarritz

Biarritz is a city which lies on the Bay of Biscay, on the Atlantic coast, in south-western France. It is a luxurious seaside town and is popular with tourists and surfers....

 to José Martín Sagardía, member of ETA. This time, the BVE claimed responsibility for the assassination.

The change of administration in Spain in 1982 did not affected his collaboration with underground dirty war efforts against ETA and therefore with the Grupos Antiterroristas de Liberación

Grupos Antiterroristas de Liberación

Grupos Antiterroristas de Liberación were death squads established illegally by officials of the Spanish government to fight ETA, the principal Basque separatist militant group. They were active from 1983 until 1987, under Spanish Socialist Workers Party -led governments...

, the new denomination of the death squads that operated in France during the Spanish Socialist Workers' Party

Spanish Socialist Workers' Party

The Spanish Socialist Workers' Party is a social-democratic political party in Spain. Its political position is Centre-left. The PSOE is the former ruling party of Spain, until beaten in the elections of November 2011 and the second oldest, exceeded only by the Partido Carlista, founded in...

 administration in Spain. Cherid died on March 19, 1984 in an explosion which happened during the manipulation of explosives destined to attempt to assassinate the ETA's executive committee. An authorization belonging to the Guardia Civil information services was found among his remains.

In 1996, during the Spanish Parliament special commission on the dirty war, it was revealed that Cherid's family applied for a pension from the Spanish Ministry of Interior. Álvaro Martínez Sevilla, Spanish United Left

United Left (Spain)

The United Left is a political coalition that was organized in 1986 bringing together several political organisations opposed to Spain joining NATO. It was formed by a number of groups of leftists, greens, left-wing socialists and republicans, but was dominated by the Communist Party of Spain...

 senator claimed that former Spanish Interior Minister José Barrionuevo (later condemned for his implication in a kidnapping carried out by the GAL) ordered that Cherid's widow receive a life pension. Minister official denied having done so.

In 2008, Cherid was accused of involvement in the 1976 disappearance of ETA activist Pertur, usually attributed to fellow members of the organization. According to the testimony of an Italian neofascist, Cherid managed a house outside Barcelona where death squads tortured kidnapped people of behalf of the Spanish intelligence services.