[Catspaw]

Isn't one tactic used by the terrorists to commit an original explosion, then set off another bomb when rescue workers get close?

[Dog]

Al Qaeda uses the tactic....hit the first responders.

[Centurion2000]

Isn't one tactic used by the terrorists to commit an original explosion, then set off another bomb when rescue workers get close?

A double explosion is the hallmark of a terrorist operation. So much for the gas leak theory.