If this is a legitimate request for assistance, please forgive me - I must add a cautionary note based on life-experience right here on AC.
Once upon a time a pair of very worried relatives arrived on Ambergris Caye looking for a man who "disappeared" whilst on vacation ---- they needed desperately to tell him that his son was about to have critical brain surgery. The story went that the missing man was depressed over a recent divorce in which he lost custody of his children; that he came to AC on vacation to regain some emotional balance, but instead had made a drunken call home, saying he was not coming back (failed to show up at his office, etc. etc. - promising attorney with a flourishing practice, etc.) One individual was strongly moved to help - she located the missing tourist and gave the relatives all the info they needed to find him pronto. The "concerned relatives" showed up at his place of residence, beat him up and managed to abduct him.
Another time ------- "Americas Most Wanted" showed a photo of a very bad man - unfortunately a popular (non-violent) and well-known local resident looked just like the photo of the killer. A "concerned" citizen called in a tip, and the man was nabbed. Without any pretense of due process he was about to be taken onto a plane and off to the US ....... fortunately a local attorney intervened before the scheduled flight, the mistaken identity was clarified, and he was released.
Before you start jumping into the missing persons / detective business, remember where you are and think twice about what you are doing. If you find a "missing person" it's a really good idea to ask them if they think they are missing.
Also remember the possibility that both sides could be bad-guys - getting in the middle of that sort of thing is not good for your health and longevity.