Authorities have found the bodies of 14 males in an abandoned vehicle outside the northern Mexican city of San Luis Potosi, the state prosecutor's office says.
"According to the initial information, everything indicates that it was the work of organised crime," Gabriela Gonzalez, a spokeswoman for the prosecutor's office, told AFP by telephone.
She said the bodies were found about 4.30am (1930 AEST) on Thursday in a van near a service station on the outskirts of San Luis Potosi, the capital of the state of San Luis Potosi.
"It is presumed that the victims were kidnapped in the state of Coahuila," she said, referring to a state that borders San Luis Potosi to the south and the US state of Texas to the north.
She said the victims were then believed to have been taken to the state of Zacatecas, then killed and dumped in San Luis Potosi.
She was unable to say whether the men died of gunshot wounds, or some other cause.
It was the first time San Luis de Potosi has been a scene of a massacre on this scale, although US immigration agent Jaime Zapata was killed and another agent wounded in an attack there in February last year.
Zapata's murder has been attributed to the Zetas crime group, one of the country's most feared, which is known to operate in Coahuila and Zacatecas.
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