I just wanted to point out for anyone who comes across this post, never volunteer information about the whereabouts of people to strangers on the Internet. You never know the true reason someone might be trying to track someone down. This is an easy way for stalkers or abusive spouses to locate their prey who have gone into hiding.
There are always official channels (police, investigations, missing persons, etc.) than can be used to find people, and anyone requesting someone’s location or contact information should instead be redirected there.