Mexican authorities on Thursday raised the death toll from Wednesday's gunfight between the nation's military and unnamed gunmen to 19.

On Wednesday, authorities in the state of Nuevo Leon, north of the country, reported eight deaths that had found in their territory.

The Wednesday clash occurred on the road linking the small town of Miguel Aleman, which is located in Tamaulipas state, to Monterrey, Nuevo Leon's state capital.

The violence occurred close to Cerralvo, a small town close to the Monterrey-Nuevo Leon border, which saw a shootout between gangsters and army officers in March that killed six people.

Army and gangsters have been fighting in several municipalities in the region during the last few weeks. A total of 27 people died in nearby General Trevino at the start of the month as a result of a similar incident.

Nuevo Leon authorities said that authorities have now seized a total of 12 vehicles, weapons, fragmentation grenades and thousands of cartridges as a result of the incident.