According to the report, filed by the Palm Beach County Sheriff's Office ... cops say Tre's mother had called because her son was "acting unusual and making irrational statements."
When Tre saw the cops, he threatened to call the White House and have them all fired -- and made bizarre statements about Al Qaeda ... so says the report.
Upon inspection, cops noticed a hole that had been punched in the wall of Tre's bedroom and a broken vase and lamp. Tre also had a cut on his hand, but was refusing medical attention.
The officer who filed the report made it clear Tre was in no position to make decisions on his own.
"I believe that Trence does not have the [redacted] ability to make decisions at this time and therefore he was transported to [redacted] where he was treated for the laceration and admitted for evaluation under the [redacted]."
Mason was a no-show at L.A. Rams training camp -- and head coach Jeff Fisher says the running back hasn't spoken with anyone in the organization since 2015.