Authorities say they're investigating an incident in which a U.S. Border Patrol agent became ill after being exposed to an unknown substance during an encounter with a person suspected of being in the country illegally.
The Cochise County Sheriff's Office says the agent was taken to a hospital after having a physical reaction to the substance in a package during the encounter late Monday in Douglas.
The Sheriff's Office says it and the Border Patrol would investigate the incident and that a hazardous materials team took control of a package for identification purposes.
No additional information was released.
