Now days after the highly radioactive material cobalt-60 was stolen in a Mexican truck heist that put the UN on alert, six people have been hospitalized for possible radiation exposure. Hidalgo state Health Minister Pedro Luis Noble said members of the group suffered from skin irritation, dizziness, and in one instance vomiting, but none showed immediate signs of radiation poisoning. The situation garnered international attention this week after the UN announced on Wednesday that two gunmen had hijacked a truck carrying the extremely dangerous cobalt-60, a radioactive material used in industrial applications and potentially in dirty bombs.