Yeah did a reference check but didn't tell the last place he had schizophrenia, he wasn't there for long, so not to sure what happened, he was seeing a counselor then stopped seeing him then quit his volunteer job, he was getting drunk in the house, but I stopped that as drinking is not allowed at our flatAll landlords do a reference check. Where he lived before and what he did and if he payed his rent on time. Did you do the reference check? How did it come out? May be he needs to see a psychiatrist or psychologist to measure his mental ability. Make sure he does not hurt himself. When someone is isolated for a long period of time, they may do harm to themselves. Praying for you and for your tenant. May Jesus give you wisdom from heaven and healing may come to your tenant.