PORTLAND, Ore. (AP) -- The Multnomah County sheriff's office says an inmate has died at the jail in Portland.

The sheriff's office said Sunday he was found unresponsive around midnight in a single cell and his injury appeared to be self-inflicted.

Jail staff and emergency responders were unable to revive him.

The sheriff's office says the inmate had been in custody for almost a year, and he had no other incidents in jail.

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