9:35 AM PT -- We're told Matthew and Orlando are not actually blood brothers -- but that's what he told cops.
6:25 AM PT -- According to cops, Orlando's brother Matthew claims he allowed the actor to stay at a home he was renovating because Orlando is homeless -- and he didn't want him to go to a homeless shelter.
Matthew told officers Orlando was acting "crazy" inside the home, accusing him of raping his wife and then came at him with a broken off knife blade and a hammer in a threatening manner.
Matthew told cops Orlando was never able to physically strike him with the weapons, and eventually set them down.
More trouble for "That's So Raven" star Orlando Brown ... the actor's been arrested for domestic violence in Ohio.
A spokesperson for the Lima Police Department tells us they got a call about a fight in progress Thursday ... when they arrived, they came upon the former Disney star and arrested him for misdemeanor domestic violence.
It's unclear who called 911, but cops say Brown's conflict was with either a family member or another person living in the home. He's apparently been in the Ohio town for over a month -- with fans tweeting about seeing him around Lima.
Brown's online booking record shows the charge as "domestic violence - cause belief of imminent physical harm by threat of force."
As we've reported, OB's had a lot of problems with the law over the last few years. You'll recall he was busted in his underwear on an outstanding warrant back in 2018. He was also arrested previously for narcotics possession and alleged burglary.
He's also had some dealings with Dr. Phil -- including a time when some friends tried to stage an intervention for the actor.