SAO PAULO (AP) — Gunmen in a car opened fire last November at Sao Paulo’s airport and killed a cryptocurrency entrepreneur in a daytime hit that was one of Brazil’s most shocking recent crimes.

Police at the scene recovered three semiautomatic rifles that are restricted for civilian use.

The case highlighted a growing trend: Restricted-use, military-style firearms are increasingly ending up in the hands of Brazilian criminal organizations, according to a study published Tuesday by the Sou da Paz Institute, a Brazilian nonprofit that tracks gun violence. Most of the guns are made in Brazil, but in second place are those that come from the United States.

The victim, Antônio Vinícius Lopes Gritzbach, had received death threats from a powerful international criminal group called First Comma

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