Bangladeshi and Rohingyas infiltration?

I was going to ramgarh by road from Ranchi and saw many areas which are completely filled by Muslims. What's shocking is that I have regularly travelled this path and they weren't there a 2-3 years ago. Then how come there is a sudden emergence of this new Muslim population? No hate to original native Muslims of my city, I love y'all so much. But I'm afraid we're having illegal immigration in our state. Are these people Bangladeshi/Rohingya Muslims ? I don't want my state to become like West Bengal please 🥺