On this page of our guide to Batman: Arkham Knight you will find the location of the only Riddler trophy available in the GCPD lockup. Trophies are one of the secrets (collectibles) available in the game.
Trophy 1 [2330, 2599]
Required gadgets: -
Trophy walkthrough: The trophy can be found in the room with the evidence. Walk to the glass and break it with any attack.