Per 7 News belize:

"the group was escorted to the Rio Frio Caves by armed soldiers as per standard procedure. But around two thirty that afternoon after the convoy of vehicles reached the site, the security personnel allegedly left the area to go and meet another group of tourists who were waiting for a BDF escort. " . . . . .

http://www.7newsbelize.com/sstory.php?nid=13323