MEXICO CITY (AP) — Prosecutors in Mexico’s southern Guerrero state say drug gang members were responsible for the killing of three government aid workers whose beaten bodies were found in a clandestine burial site.

Prosecutors said Wednesday that the five suspects are believed to be involved in marijuana cultivation and work for a local drug gang.

The three victims worked for a government food agency that delivers basic foodstuffs to poor families. They disappeared in April during a delivery to isolated villages in the mountains of Guerrero.

On Tuesday, the head of the federal housing and land agency said some companies working to build new houses for families affected by last year’s flooding in Guerrero have walked away from projects after receiving threats from gangs.

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