What would happen to the character I'm nghề viết văn in my book in this situation?

I need help figuring out what would exactly happen to this character in this particular situation. I've looked it up and I found an bài viết that helped some but not enough. If any of bạn know anything else that would happen in this situation, let me know because that would help A LOT!

The Situation: The character is a ten-year-old boy that had been an orphan ever since he was a baby. He has no blood relatives that he knows of. He attempts to commit suicide bởi jumping off the docks bởi the ocean. A police officer sees this and manages to save him after he jumps out of the water. He's still suicidal and plans on diễn xuất on it, refuses to tell the police hoặc anyone else (like doctors hoặc whoever) what his name is (Other than saying, John Doe, which is a name hospitals use for men when they don't know who they are), doesn't have any family to look after him, and isn't stable enough to be let go.

Where would he go? To a psychiatric hospital? Rehab? An asylum? hoặc what? If bạn know, please tell me and if bạn know anything specific that they'd do with a patient of his age in this situation, please tell me. I appreciate any kind of help that I get, thank bạn in advance.