Authorities in Kentucky have not determined what motivated a fatal shooting at a Kroger supermarket in the Louisville area, but one witness says it appeared to have been racially motivated.

As CrimeOnline previously reported, two people died when a gunman opened fire at the Jeffersontown grocery store on Wednesday.

An update from Fox News indicated that the two victims were both black. One was found inside the store and the other was killed just outside.

A white shopper who says he tried to intervene when he saw the armed suspect take aim says the man told him he would be safe because of his skin color.

“Don’t shoot me, I won’t shoot you,” the gunman allegedly told Ed Harrell. “Whites don’t shoot whites.”

Police have identified 51-year-old Gregory Alan Bush as a suspect. He was arrested at the scene and was booked into jail with bond set on Thursday at $5 million.

He is expected to face two criminal counts of murder and 10 counts of wanton endangerment.

Local and federal authorities confirmed they were still investigating the incident to pinpoint a suspected motive.

Investigators say Bush shot one victim in the back of his head shortly after walking into the supermarket. He then allegedly shot the man several more times “as he was down on the floor.”

After putting his gun back into the holster on his waist, police reports allege he walked outside and shot a woman in the parking lot.

Officials have since identified the victims as 69-year-old Maurice Stallard and 67-year-old Vicki Lee Jones.

[Featured image: Gregory Alan Bush, Louisville Metro Department of Corrections]