As I said before, if it's the 'cocaine bear' story, the bear found the cocaine which was part of a drug - smuggling operation gone wrong. The drugs were dropped in the forest where the bear lived. The bear consumed the cocaine and its behavior became erratic. Eventually, it died due to the overdose of cocaine.
Well, if we assume it's not a misspelling. There could be a story where a bear named Cocoane had some sort of encounter with humans. Maybe it was a bear that was known in a small village. It could have raided the local crops, and then there was an effort to relocate it. But this is all speculation without more information on what the 'cocoane bear' really is.