In a place mentioned in reports (5)
I believe the answer is:
sited
'in a place mentioned in reports' is the definition.
I can't judge whether this definition defines the answer.
'in a place mentioned in' is the wordplay.
'in' means one lot of letters goes inside another.
'a place' becomes 'sted' (I have seen 'Old place' mean 'sted' so perhaps 'place' could also mean 'sted').
'mentioned in' becomes 'i' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'sted' going around 'i' is 'SITED'.
Can you help me to learn more?
(Other definitions for sited that I've seen before include "Situated" , "Placed, located" , "installed" , "Put" , "Positioned" .)