Agreed, and the first task is to gain intelligence while vetting their story. It could be what it is at face value or a sophisticated ruse. In either event, providing a meal and raising your security posture makes sense.

Saying it all checks out, put out word on the situation and that there is a home invasion crew around.

I would most likely begin to actively hunt the home invasion robbers with or without support, but discreet inquiries with whoever is acting as the area authority sets the ground rules on how that will take place because such operations are vastly different depending on whether it is a permissive or non permissive area.

Non permissive and unfriendly areas being the most difficult to function in. In permissive and friendly areas, it is a simple matter of backing up the nominal authorities.