Robbers picked the wrong Atenas-bound bus Sunday night.
About 11 p.m. as the bus was entering Atenas three of men among the 35 passengers aboard stood up and announced they were robbing the driver and passengers, said the Judicial Investigating Organization.
Among the passengers was a judicial agent who announced that they were under arrest. One of the men fired on the agent injuring him in the arm, said the Judicial Investigating Organization. The agent returned fire and hit the man in the stomach. At that point a second man picked up the weapon and fired on the agent. He, too, was shot by the agent, the agency said.
A third suspect, who was unhurt, was detained in the location, said investigators.