My grand son lived with me until late jan 2012. I moved feb 15, 2012 and put the house up for sale . On march 6,2012 he ended up with no where to live so he decided to move back in my house . The police came and said because he had a pice of mail at that address ,I would have to evict him. The locks had been changed so I am not sure how he got in.is there any thing else that can be done?