On April 21, 2011, Christopher Meloni filmed his last scene- for Delinquent- as a last minute scene addition (1 out of 3) with Isabel Gillies. On May 24, 2011, it was announced that Christopher left the show after his negotiation meeting for season 13.
-Christopher Meloni's Representative
"It's been an amazing right. Chris loves these people, but after 12 years it's time to go"
-Bill Butler, Christopher's manager