The Times has just posted the following:
“Police believe that explosives used in the London bomb attacks may have been homemade and of a type that has been a hallmark of al-Qaeda operations, as the death toll from the July 7 atrocity rose to 54.
Forensic detectives believe that a flat in Leeds was used as a bomb factory to convert acetone peroxide, or triacetone triperoxide (TATP), made from chemicals bought over the counter, into a potent explosive. The mixture is so volatile that it is nicknamed Mother of Satan.
This is the same type of explosive that Richard Reid had in his shoes when he attempted to blow up a Transatlantic flight in 2001, and the Gloucester shoebomber Sajid Badat who decided not to go through with his mission. The discovery provides the strongest link yet between the perpetrators of the bombings and al-Qaeda.”
This explains all the interest in “the chemist“.