Three children kidnapped by a suspected gang were freed by Mexican army in a raid on Wednesday, BBC News reported.
Soldiers found the children chained up in a private home in the central city of Temixco, along with the decapitated body of a man, whose head had been found inside a motorcycle helmet in a nearby town on Tuesday, the BBC reported.
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The victim has been identified as Eduardo Gonzalez Mora. No information was released about the children or their abduction, according to the BBC.
A threatening note was found next to the head, signed by a gang calling themselves "Los Rojos" (Red Ones). Officials also arrested thirteen suspected members of the gang, which specializes in theft, kidnapping and drug trafficking, the BBC reported.
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Until recently, Morelos state, where Temixco is located, had not experienced the high levels of violence common in other regions of Mexico.