Authorities say the origin of a substance that led to the evacuation of an industrial park near the New Mexico-Texas state line and sickened about 200 people remains unknown.
Capt. Rich Libicer of the New Mexico State Police tells the Las Cruces Sun-News (http://bit.ly/Sep8MW) that investigators are trying to pinpoint a possible location for where the substance may have come from at the complex of factories and warehouses in Santa Teresa, N.M., near the Mexican border just northwest of El Paso, Texas.
A 1-mile area surrounding the Dona Ana Industrial Park was evacuated on Oct. 29.
People in the complex complained of difficulty breathing, light-headedness, nausea and dizziness. Some reported a burning sensation on their skin, but no serious injuries were reported.