Medics arrived and checked out Jake Harris, who declined to go to the hospital or file a police report.
He was later taken to Providence Hospital in Everett, Washington, by relatives, where he remains in the ICU.
Josh said Jake had gotten a ride home from a couple who had been at the Quil Ceda Creek Casino near Marysville, Washington, but it was unclear if that's where Jake had met the couple and where the actual beating took place.
Josh said a man and a woman from Spokane are the suspects that Jake had identified and that the "word on the street" is that they had done such attacks before in which the victims were beaten and their money was stolen. He showed their pictures and named them in one of the two videos posted.
KIRO has not confirmed that the people named in one of the videos are suspects in the attack and are not yet showing the video or pictures containing their names and photos.
Josh Harris said he had met with detectives though his brother had declined.
Jake Harris has had past struggles with drug abuse as shown on "Deadliest Catch."