There must be dozens of Rabbi's in Israel that are not on the up and up with their flock. Reading between the lines, the thousands of people that believe such con men Rabbi's can't all be innocent people that trusted the Rabbi. If an investigation does take place dozens of the flock would probably get indicted, they may be in on the scam...
At least 21 killed in separate attacks in Afghanistan (DPA)
from the article: U.S. prosecutors probing Israeli rabbi over fraud