Fake Orthodox Rabbis

I work for a synagogue in the greater Phoenix/Valley area. Recently, there was a call from an extremely persistent Rabbi to use our Mikvah. Usually that doesn’t ring any bells, depending on what they need it for and if it is a time sensitive matter, etc.
The interaction he had with our front desk liaison was suspicious, so looking further into the details & request, it was found that 2 men have been allegedly pretending to be Orthodox Rabbis, in order to gain access into synagogues to ruin Torahs, Mikvahs, etc.

I’m mostly looking for information anyone may have about these men or if they have approached others in our communities.