Need advice on actions to take

[Maddie Hocking]

I am not a landlord, I am a very frustrated tenant. To start, Me and my 4 roommates have lived in this house for about a year and a half, there is no problem with the landlord he is great. What is not so great is my roommate. He moved his brother into the house without asking anyone, im not sure he asked the landlord, he says he did but i dont believe him one bit. Its been 4 months since he did that. His brothers entire apartment is sitting in our dining room and our front yard. All of us roommates have talked to the roommate about the stuff and the brother on multiple occasions but nothing changes. Having the brother in the house is a violation of our zoning laws, the brother also have a lengthy (IMO) criminal history. I am scared to report this to the landlord, because I am scared of getting evicted for his mistakes. Im just not sure what to do in this situation.