LA CROSSE, Wis. — An investigation found that a La Crosse County Jail inmate who was found dead in his cell in February died of natural causes, authorities said Friday.

The La Crosse Police Department investigated the death of 57-year-old Jeffrey Nottestad of Hixton. An autopsy was conducted at Mayo Clinic in Rochester, Minnesota.

The La Crosse County Sheriff's Office said Friday the autopsy and investigation concluded that Nottestad died of natural causes. No foul play is suspected.

Nottestad was being held in the jai l on a probation warrant issued by the Wisconsin Department of Corrections. Jailers and emergency responders were unsuccessful in reviving him.