Ricardo Boone Salmon, a congressman for Chihuahua state, said they were calling on the interior ministry to ban Call of Juarez: The Cartel.

BBC: Ciudad Juarez sees 40 killed in violent weekend

The murder rate has fallen substantially since 2010, according to Chihuahua state figures, but the bad reputation is not likely to fade fast.

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But Attorney General for Chihuahua State Carlos Manuel Salas says her death was the result of an "unfortunate encounter" with the teenagers, who got involved in an argument with Ms Chavez and strangled her.

BBC: Juarez killings activist Chavez murdered in Mexico

In 1986, in protest against fraudulent elections in the northern state of Chihuahua, the archbishop suspended church services across the state for one Sunday.

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The two guns were subsequently linked to the suspects in the torture and killing of Mario Gonzalez Rodriguez, the brother of Patricia Gonzalez Rodriguez, who was then attorney general of the Mexican state of Chihuahua.

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He was transferred to a maximum security prison 400 kilometres away in the state capital of Chihuahua - and placed in solitary confinement.

BBC