The way the bomb blasts were triggered on May 13 in Jaipur and on August 25, 2007, in Hyderabad showed that the terrorists were trained at the same place, before being 'deputed' to the states by Harkat-ul-Jihad-e-Islami, the suspected organisation behind the blasts, according to police sources.

A two-member special police team, which went to Jaipur to study the blasts, had came to a conclusion that there were many similarities between the two blasts, in which they used timers and splinters to create maximum damage.

The sources said the technology used in the Hyderabad twin blasts and Jaipur blasts were apparently same. The technology was suspected to be developed by an expert team working with the HUJI.

However, the links between the Jaipur blasts and Hyderabad twin blasts were yet to be ascertained, the sources said, adding that the design of the bombs and the quantity of explosives used in the two blasts were the same.

The experts have prepared a new kind of explosive, which suits the conditions of the locality. The bombs, made in a compact size, were fit to go off at public places without raising doubts among the people, the sources said.