The prosecutors' office in Guerrero said on late yesterday that seven members of a community police force were attacked as they patrolled the streets of the city of Tixtla, which is home to the teachers college that had 43 of its students vanish more than a year ago after being detained by municipal police in a nearby city.

Four members of the vigilante-style community force died in the attack.

Today, officials in the northern border state of Tamaulipas said two police officers and five suspected gunmen died in at least three gun battles in Rio Bravo, which on the Texas border near McAllen.

Two confrontations occurred on late yesterday when gunmen attacked police patrols in the town, killing two officers and wounding a female officer.

The area has been the scene of turf battles between rival factions of the Gulf Cartel.

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