JANESVILLE, Wis. (WTVO) — Officials have identified Nicole Lemke, 29, of Janesville, as the female inmate who died in custody at the Rock County Jail on February 2nd.

According to the Rock County Sheriff’s Office, a jailer noticed the woman laying on the floor of her cell during a nightly check at 1:15 a.m.

A supervisor, medical staff, and additional officers rushed to the cell to provide aid, but life-saving measures were unsuccessful, authorities said.

The body has been turned over to the Dane County Medical Examiner, and the death is under investigation by the Detective Bureau and the Wisconsin Department of Corrections.

The medical examiner has not yet determined Lemke’s cause of death.