A representative or official of a government or administrative department of a government(noun)
WordNet. Princeton University. 2010.
Use "government agent" in a sentence
"All I'd need was a split second to get out of reach (and range) of Joe … and then either try to flee the town or declare myself to some responsible citizen as a government agent … bigod, that would be risky, they'd never befieve me … J.B. broke in on my thoughts."
"I am told that I adjusted very quickly, that Korean Social Services, the government agent responsible for my adoption, must have taken good care of me, though I arrived carrying scabies and with a bandage on my forehead."