Taken in charge by a group of police, is sour (6)
I believe the answer is:
acidic
'sour' is the definition.
(similar in meaning)
'taken in charge by a group of police' is the wordplay.
I cannot quite see how this works, but
'a' is within the answer.
'police' could be 'cid' (abbreviation for Criminal Investigation Department) and 'cid' is found in the answer.
'in charge' could be 'ic' (abbreviation for 'in charge') and 'ic' is located in the answer.
This accounts for all the letters.
This may be the basis of clue (or it may be nonsense).
'is' acts as a link.
Can you help me to learn more?
(Other definitions for acidic that I've seen before include "Containing a sour-tasting substance" , "Tart, sour" , "Sarcastic or sour" , "Sharp-tasting, sour" , "Like vinegar" .)