GRAPHIC: Five Gunmen Killed in Mexican Border State Cartel Camp Shootout

Mexican Marines killed five gunmen from the Gulf Cartel during a battle inside a cartel camp in the border state of Tamaulipas. The battle took place in a rustic field less than 15 miles north of this city when a military helicopter carrying out surveillance flights came under fire. The military aircraft was surveying the area looking for cartel activity in properties that had been abandoned due to the cartel violence in the region.