If they're not from Boston (about 15 miles away) they're probably from a small area that's only 2 or 3 miles away...populated by Brazilians whose paperwork isn't entirely in order...if ya catch my drift.
Basically,Natick Mall is well known in Greater Boston as being where the rich go to shop.So it would be logical to see it as a target for any crook.
Framingham .