Mexico's military posted soldiers around a major hospital Monday to guard suspects wounded during weekend gunbattles that raged across Tijuana.

Two more deaths raised the toll to 15 from the pre-dawn Saturday shootouts in the violence-plagued Mexican city across the U.S. border from San Diego, local news media reported.

All of the dead were believed to be drug traffickers, possibly rival members of the same drug cartel, Baja California state Attorney General Rommel Moreno said.

He refused to specify the cartel. The Tijuana-based Arellano Felix gang has been shaken by the arrests or deaths of many of its key leaders.

Police did not identify any of the dead or wounded.

In one of the shootouts, gunmen exchanged fire between sport utility vehicles speeding down a six-lane boulevard in Tijuana.

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