NACO, Ariz. – A Border Patrol agent was shot to death Tuesday in Arizona near the U.S.-Mexico line, the first fatal shooting of an agent since a deadly 2010 firefight with Mexican bandits that spawned congressional probes of a botched government gun-smuggling investigation.

The agent, Nicholas Ivie, 30, and a colleague were on patrol in the desert near Naco, Ariz., about 100 miles from Tucson, when shooting broke out shortly before 2 a.m., the Border Patrol said. The second agent was shot in the ankle and buttocks, and was reported to be in stable condition Tuesday afternoon.

Authorities have not identified the agent who was wounded, nor did they say whether any weapons were seized at the site of the shooting.