Searched a relations officer's sleeping place (6)
I believe the answer is:
probed
'searched' is the definition.
(I've seen this before)
'a relations officer's sleeping place' is the wordplay.
'a relations officer' becomes 'pro' (I am not sure about this - if you are sure you should believe this answer much more).
'sleeping place' becomes 'bed' (I've seen this before).
'pro'+'bed'='PROBED'
Can you help me to learn more?
(Other definitions for probed that I've seen before include "Examined, dug into" , "Questioned or examined thoroughly and closely" , "Searched" , "Did research" , "Physically examined" .)