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']
(..) - He got away. - Good thing, too. You were this close to losing your... Uh-oh. Please report to operating room immediately. - How is he? - He'll live. - I'm fired, aren't I? - You think? - What can I say, Rick? (..)2004 The Incredibles