According to Gordon, crime lord Carmine Falcone was rumoured to have disappeared during Ra's al Ghul's attack on Gotham with many of the other inmates of Arkham Asylum, but he is said to be spending time in prison, tying into Sal Maroni and Gambol fighting for underworld control in The Dark Knight.
In the Batcave, Batman informs Superman that the man behind The Purge is Ra's Al Ghul, an eco-terrorist.