The Arizona Game and Fish Department is reviewing procedures on work near the Mexico border after three government employees were fired on east of Arivaca Lake last week.

Two Game and Fish employees and an employee with Pima County Natural Resources, Parks and Recreation, were fired at Thursday by a group of men while scouting for a land access project.

“This is the first time in recent history that our employees have been fired at on the border,” said Leonard Ordway, supervisor for Game and Fish’s Southern Arizona region.

The incident happened about eight miles east of Interstate 19 just south of Tumacacori, and about 15 miles north of the U.S.-Mexico border. None of the agency employees was injured.

According to Game and Fish, the three were riding all-terrain vehicles through a small canyon area about four miles east of Arivaca Lake when they came across at least four Hispanic males dressed in camouflage.

Ordway said two of the men in camouflage fled a short distance up a hill and dropped down in the grass after the groups met, while the agency employees backed out of the area.

The three agency employees left and notified Game and Fish, which notified the Border Patrol, Pima County Sheriff’s Office and the Arizona Department of Public Safety.

About 30 to 40 law enforcement personnel and three helicopters were on site within 45 minutes, Ordway said. They men were not found, but officials recovered several fresh 9mm casings.

He said the department is reviewing its operating procedures in borderland areas.