...The Chlorine Institute, a trade group that represents more than 200 companies that make and distribute chlorine, recently alerted the FBI to several thefts or attempted thefts of 150-pound chlorine tanks from water treatment plants in California...

...There is no intelligence indicating such an attack is imminent or that terrorists have stolen any chlorine from the nation's chemical or water treatment plants, which use chlorine to purify drinking water...

Err, am I the only one confused by this article?

Why isn't anyone looking for Liquid Hydrogen, Liquid Oxygen, and other liquid/gas explosive vehicles as well? one would think that a tanker truck full of LOX would make a very nice smoking hole in the ground.

Chlorine bombs pose new terror risk - USATODAY.com