Robbers steal 250 boxes of chewing gum in S. Russia

In the beginning of December, a chemistry student from the northern Ukrainian city of Konotop was killed when a stick of chewing gum exploded in his mouth.
A forensic examination established that the chewing gum was covered with an unidentified chemical substance, thought to be some type of explosive material.
Police questioning revealed that the student had a bizarre habit of chewing gum after dunking it into citric acid. On his table, police found both citric acid packets and a similar-looking unidentified substance, believed to be some kind of explosive material.
Investigators believe that the student simply confused the packets, and put the gum, covered with explosive material, into his mouth, Kazinform cites RIA Novosti. See www.en.rian.ru for full version.