Foul reportedly observed by police officer and daughter (6)
I believe the answer is:
sordid
'foul' is the definition.
(I've seen this in another clue)
'reportedly observed by police officer and daughter' is the wordplay.
'reportedly' becomes 'sor' (I can't justify this - if you can you should give a lot more credence to this answer).
'observed by' is a charade indicator (letters next to each other).
'police officer' becomes 'DI' (detective inspector).
'and' says to put letters next to each other.
'daughter' becomes 'd' (genealogical abbreviation).
'sor'+'di'+'d'='SORDID'
Can you help me to learn more?
(Other definitions for sordid that I've seen before include "Dirty, mean" , "'Seamy, seedy (6)'" , "Squalid - base" , "Squalid or ignorable" , "'Sleazy, squalid (6)'" .)