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 says they have everything you need to build the Jericho missile. He wants you to make the list of materials. He says for you to start working immediately, and when you're done, he will set you free. - No, he won't. - No, he won't. I'm sure they're looking for you, Stark. (..)2008 Iron Man