A man with a rifle walked into an Indiana mall and opened fire in a food court Sunday evening. A law-abiding citizen with a permit to carry a handgun responded in seconds and was able to shoot and kill the suspect, ending the rampage. 

The Greenwood Police Department said a lone suspect entered the food court area of the Greenwood Park Mall, located on Highway 31 on the south side of Indianapolis, around 1800 local time. The suspect was armed with a rifle and several magazines of ammunition and immediately began firing. He was identified as an adult male, and police have yet to release a motive. 

The suspect killed three people and injured two during the rampage but was stopped short by a 22-year-old man carrying a gun lawfully. Police have not shared the man's name, but local authorities are already calling the citizen who stopped the shooter a "real hero."