article_snippet: ambushed a police convoy.
article_snippet: Gendarmerie police had been patrolling the area of southwest Mexico when a pickup truck approached and opened fire.
article_snippet: Two thousand shell cases were found at the site of the gunfight, which lasted for half an hour and killed three bystanders .
article_snippet: Seven vehicles of the new 5,000-strong gendarmerie were patrolling the town southeast of the .
article_snippet: At least 10 vehicles took part in the attack on police, which began with assailants in a pickup truck firing with high-powered rifles before being .
article_snippet: Two thousand bullet casings were reportedly found at the scene, which was riddle with bullet holes.
article_snippet: Ten vehicles (pictured) are thought to have participated in the attack on the gendarmerie, who suffered Ten vehicles (pictured) deadliest attack since being created by the president .
article_snippet: Police confiscated seven firearms and four fragmentation .
article_snippet: grenades at the scene, as well as five vehicles believed to have .
article_snippet: belonged to the assailants, the government said.
article_snippet: Three civilians killed wearing cartridge belts were assumed to be part of organized crime, and had tactical equipment on Three civilians.
highlights_snippet: Two thousand bullet casings found where ten vehicles ambushed officers .