Chandler Jones wrote on social media Monday night that he was taken to a hospital "against my will" by the Las Vegas Fire Department and later transferred to a behavioral health facility last week.
Jones was placed on the non-football illness list last week by the Las Vegas Raiders with what the team has described as a personal matter.
He has been away from the team since Labor Day weekend when he began a series of social media posts aimed at the Raiders.
He wrote in his post to X on Monday night, "First day out but I'm still aligned," indicating that Monday was his first day out of the facility. He attached journal entries plus a statement of "patient rights" from the Seven Hills Behavioral Health Hospital in Las Vegas, highlighting sections of the document he believes were not followed by the facility.
The Raiders have repeatedly referred to Jones' situation as a private matter and declined further comment.