Hello. You did not enter the text where these phrases should be searched, which makes it impossible for this question to be answered. However, I will try to help you as best I can.
To find these phrases, you will have to read the text. You'll be able to find them when the text addresses the firestorm, using a cause and effect textual structure. This kind of structure is noticed in a text that shows that an event caused the existence of another event. In this case, the phrases you need will be the ones that show that the bombing, or some element that made up that bombing, was what caused the existence of a firestorm in the affected area.