Apparently Joseph McStay owns property in Belize.
“Over the last few weeks, investigators have been through the McStay family’s bank accounts, their phone records. They have contacted officials in Belize, where Joseph owned a property. They have found no clues, they said.”
Interesting article about Belize here, from 2001:
“Of the many appealing things about Belize, probably none is more important to prospective retirees and relocatees than the relatively low cost of housing here. To be sure, in a few prime areas you can spend hundreds of thousands of dollars on North American-style luxury home, but you can also buy raw land at prices not seen in the U.S. since the 1960s and in some areas find a simple but pleasant rental house near the sea for under US$100 or $200 a month.”
I think someone should be making a trip to Belize, or at the very least get some fliers posted down there.