Material confiscated by Interpol yesterday (9)

I believe the answer is:

polyester

I'm a little stuck... Click here to teach me more about this clue!

'material' is the definition.
(I know that polyester is a type of material)

'confiscated by interpol yesterday' is the wordplay.
'POLYESTER' is hidden in amongst the letters.
But, I am not sure how this is indicated.

Can you help me to learn more?

(Other definitions for polyester that I've seen before include "material found in fabrics" , "Stole prey (anag) - synthetic material" , "Synthetic compound" , "Synthetic fibre or substance" , "Turn to Presley for the synthetic fabric" .)

I've seen this clue in The Times.

Want a hint initially instead of a full solution? Install my app