It's probably easier to think of "call in" as a phrasal verb meaning "summon".
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pructusThanks a lot, GPY~But to understand it as summon, the situation is that they reported to some agency that Jack Bauer is a suspect, not summoned Jack Bauer....Sorry, it seems I misinterpreted it then. In that case I could only guess that "call someone in" means report someone by telephone, but this is not an expression I'm really familiar with.