The cause of the problem was not 'immediately' clear. [=is was not known right away]
They live in the house 'immediately' [='directly'] behind this one.
We need to leave 'immediately'. [='at once', 'right away']
(..) radiation until it hatches. You have to shut down. Secure the grid! Wildfire protocols! All personnel, clear the first perimeter immediately! What's going on? Hey, where are you going? Grid's secure. Kill it. All readings are flat-lined. (..)2014 Godzilla