Authorities say a stolen measuring device containing radioactive material has been recovered in northern Mexico.
The Interior Ministry says the density gauge was found on Saturday evening in Ciudad Obregon after somebody told authorities a driver had left a black bag on a sidewalk beside a stop sign.
It had been stolen from a Sonora state road works pickup truck in the same city a day earlier.
Sunday’s statement from the ministry says the device contained cesium, americium and beryllium. Such gauges are commonly used in road construction.
There have been a half-dozen thefts of radioactive material in Mexico in the last two years. The hazardous materials have been recovered in the previous cases.