Cash was taken by ambulance to IU-Health Bloomington around 6:20 p.m. Wednesday evening, according to Laury Flint, IUPD deputy chief.
Next of kin have been notified.
"We are shocked and deeply, deeply saddened," said Mark Land, associate vice president of IU Communications. "Not only is Keith great at his job, he was a great friend to many people here, around town and on the campus. Our thoughts go out to his family."
Cash first started at IUPD as a patrol officer in 1984. He was named chief in October 2010.
Flint said no decisions regarding succession have been made at this time.
- Matthew Glowicki & Hannah Smith
The Hoosiers will get a shot at another top-20 opponent with a strong defense.
"Midnight (acoustic)" is the perfect album to fit a melancholy mood.
Aronoff will be at IU on Oct. 20 and 21.