A 54-year-old woman was pronounced dead Saturday morning in the Crow Wing County jail in Brainerd, according to the Sheriff's Office. Foul play is not suspected.

Sheriff deputies checked on a medical incident in the jail about 8:45 a.m. and found the woman, who was a Beltrami County boarder, unresponsive in her bunk, a press release from the Sheriff's Office reported. Lifesaving measures were attempted, but the woman was pronounced dead about a half-hour later.

As a matter of protocol for deaths in custody, the Morrison County Sheriff's Office is investigating. The Ramsey County Medical Examiner will perform the autopsy.