Terrorist gang 'used military explosives'

"A SINGLE bombmaker using high-grade military explosives is believed to be responsible for building the four devices that killed more than 50 people last week, The Times can reveal.

Similar components from the explosive devices have been found at all four murder sites, leading detectives to believe that each of the 10lb rucksack bombs was the work of one man. They also believe that the materials used were not home made but sophisticated military explosives, possibly smuggled into Britain from the Balkans."
Times