An autopsy showed Gloria O'Connor died of a heart attack while in the Saunders County jail.
A grand jury has cleared authorities of any wrongdoing in the February death of a Saunders County jail inmate.
Saunders County Attorney Scott Tingelhoff announced late Thursday afternoon that the grand jury had met this week and determined no crime had occurred in the death of 47-year-old Gloria O'Connor. O'Connor was found unresponsive in her cell on Feb. 10. She was taken to a Lincoln hospital but could not be revived.
State law requires such an investigation whenever someone dies in custody or while being arrested.
An autopsy showed O'Connor died of a heart attack.
She was serving a 30-day sentence for disorderly conduct, trespassing and other charges when she died.