Depending on his level of consciousness, or the medication that he's been given, it's likely that whatever he says won't be admissible. People whose mental capacity has been compromised because of trauma or medication aren't in a position to waive their right against self incrimination.
I'm guessing CID hasn't yet spoken to him - unless of course he's lucid and not-medicated.
Given the 300 or so witnesses, I don’t imagine the case against him is going to need any statements from him.