Drug related violence in Mexico has left another 25 people dead, four of them from decapitation.

The victims were killed in Mexico's southern Guerrero state on Saturday, with two bodies of decapitated men found in the streets of the resort city of Acapulco.

Two other decapitated bodies were found west of the city.

There was more violence In Ajuchitlan del Progreso, 160 kilometres north of Acapulco, when eleven presumed drug traffickers were killed by army soldiers in a shooting fight.

The states of Guerrero is largely under the control of the "La Familia" drug cartel, one of the most vicious trafficking groups in the country.