"Not only did this happen in a village where the people are so close to one another, but it happened on a marae which is really horrible for everyone.
Nga Hononga Marae chairman Ron Hough said he was embarrassed by the behaviour of those responsible.
"Not only has this now happened, but it has tarnished the good name of Jerusalem and its people and we may now struggle to attract further tour groups to the town."
Mr Hough admitted he had taken the crime very hard.
The woman translator for the group said from Wellington last night that she could not comment.
Mr Deadman said police had no definite leads.
"We're pretty sure the crime was done by outsiders though and it's such a bad look for New Zealand tourism. We just don't need stuff like this ... I mean 48 overseas tourists, 12 of them get ripped off it just doesn't look good at all," he said.
If anyone in the local community has information that may help please call Raetihi Police on 06 3854002 or Crimestoppers 0800 555 111.