Terror threat

'Unique, strange, and terrible' — ISIS may have created a new type of bomb

...Investigators at the scene are now concerned with another potential threat: The terrorist group may have developed and used a new type of bomb.

"We've never seen it before, and it's very worrying," a Western security source in Baghdad told the BBC.

So far, investigators have determined that the type of explosives and the way the chemicals were assembled in the van differed from the traditional methods inside the war-torn country.

This may explain how the explosion from the VBIED had left no distinctive crater, and that the impact from the initial explosion left buildings in the neighborhood still intact.

Explosive experts told the BBC that the chemical composition was unique and that it was difficult to make.