Decorative coverings in a capital city nabbed by criminals (10)

'decorative coverings' is the definition.
The answer and definition can be both man-made objects as well as being plural nouns.
Perhaps they are linked in a way I don't understand?

'a capital city nabbed by criminals' is the wordplay.
I cannot quite understand how this works, but
'a' is present in the answer.
'capital' could be 'paris' (Paris is an example) and 'paris' is present in the answer.
'criminals' could be 'cons' and 'cons' is present in the leftover letters.
This accounts for all the letters.
This may be the basis of clue (or it may be nonsense).

'in' is the link.

Can you help me to learn more?