They also said that they were shown a "shorter" version of the documentary, following which they had suggested deletion of some controversial content before broadcast but the final version was never show to them.
"They violated the terms and conditions of the permission to shoot. A shorter version of the film was shown to a screening committee in the month of June last year and after going through the movie, some changes were suggested to them.
He also said that before the broadcast, they were supposed to show the final version to Home Ministry and Tihar and take approval.
"They were supposed to take our approval before broadcast but we were not shown the full version. We have served legal notices at two offices of BBC in New Delhi and also to the producer and co-producer of the documentary. The notice has been emailed as well as hand delivered asking them to stop the broadcast of the documentary," he said.
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Despite Indian government's objection, BBC went ahead to telecast the documentary on Wednesday night in the UK. The documentary was also uploaded on YouTube. It was taken down late afternoon but not before it had gone viral on social media with multiple shares and being widely discussed.
Delhi Police had on Tuesday filed an FIR and secured a court order restraining the media from airing the documentary, as a whole or in parts, which contains the interview of a convict in the gang rape case, Mukesh Singh.