PORTLAND — Police say there were no signs of trauma or criminality in the death of a Cumberland County Jail inmate Wednesday.

Karyn Victoria Kundishora-Nowlin, 30, of Portland, had been under observation in the jail’s medical unit for seizures when a nurse checking her vital signs as part of routine medical rounds at 5:17 a.m. found she had very low blood pressure, according to a news release from the jail.

Medical staff performed CPR and summoned an ambulance. Rescue workers took over her care and brought Kundishora-Nowlin to nearby Maine Medical Center. The jail was notified of her death at 6:16 a.m.

The case is being inveisgated by the Portland police as well as the internal affairs unit of the Cumberland County Sheriff’s Office.

Such investigation is required by law whenever someone dies in custody.

An autopsy was performed by the Office of the State Medical Examiner on Wednesday but no results were available and more tests need to be done, police said.

Kundishora-Nowlin’s medical observation status meant that a corrections officer checked on her every 15 minutes, but did not check her vital signs, which is done by the medical staff.