The victim is Mary Austgen, 76, of Saint John.
Austgen was reported missing Thursday afternoon in Griffith, where her family owns a business. Police are now focusing their investigation on that business, treating it as a crime scene.
Her body was found overnight in a car parked inside garage 2D at the Majestic Star Casino in Gary. Austgen had been shot once in the lower left torso, according to the Lake County, IN coroner.
Gary police, Griffith police, and the Lake County Crime Lab are working together on the homicide investigation. No one is in custody, police said.