Theft of truck carrying cobalt 60 in Mexico.

You guys see this on the news?
Here's the Incident and Emergency Centre alert.
http://www.iaea.org/newscenter/news/2013/mexicoradsource.html

I guess it was a 2.5-ton Volkswagen truck.
That is nasty radioactive stuff if combined with regular type explosives(like a dirty bomb).
It could do quite a bit of damage to an area in regards to spreading radiation.

I wonder who stole it?

I cant help but to think of this Global Security Studies doc from 2012 after seeing the news reports.
"Hezbollah and Al Shabaab in Mexico and the Terrorist Threat to the United States"

Hezbollah and Al Shabaab have been discovered to have a footprint in Mexico, are receiving Mexican language and cultural assimilation training, have been discovered to have a relationship of convenience with the Mexican drug cartels, and have been smuggling their operatives into the United States to raise money and to recruit members to their cause. With raising tensions between the U.S. and Iran, Iran has stated that it currently has the ability to reach out and target the U.S. on U.S. soil. Since it is unlikely Iran will send military troops to the U.S. and lacks the capacity to strike the U.S. with an intercontinental ballistic missile, with Hezbollah residing in Mexico Iran could use Hezbollah as a proxy to strike targets within the United States. With Al Shabaab aligning itself with al Qaeda, residing in Mexico, and successfully smuggling operatives into the U.S. This provides a force multiplier and an established strategic cell structure for al Qaeda to reside near and within the U.S. and target the U.S. on U.S. soil. Therefore, Hezbollah and Al Shabaab residing in Mexico pose a direct terrorist threat to the United States.

It's a long doc with more info - you can download it here and read the rest if interested.
https://cdn.anonfiles.com/1386169658221.pdf