At least two people died and multiple others were shot inside a grocery store on the outskirts of Louisville, Kentucky on Wednesday. One suspect was detained, police said.

A dispatcher with the Jeffersontown Police Department who spoke to The Associated Press did not give details on the extent of the victims' injuries and would not give his name. He also did not release the name of the suspect.

Eric Deacon, an emergency medical technician who was shopping at the store when gunfire broke out, said he heard a "loud bang."

"It almost sounded like a pallet hitting the floor," he told WDRB-TV in Louisville.

Deacon said he saw two men run out of the store into the parking lot, shooting at each other. He said he saw a woman in her mid-50s or early 60s get hit as he was calling 911, and he ran to help her.

"I looked at her and she was, she was gone," he said. "I knew there was nothing I could do."

As police officers swarmed the scene and blocked off the area with yellow crime tape, a man identified by the Louisville Courier Journal as Tim King stood in the parking lot waiting for his wife to come out. He said he drove to the store after she called him sobbing to tell him what had happened.

"I said, 'What's wrong?'" King said in a video posted on the newspaper's website. "And she said, 'There's someone shooting up here.'"

King said his wife said she heard popping noises, then someone ran around a corner and said, "Oh my God, he's killed her."

Customers were moved to the back of the store, she said.

"It's just a very, very scary situation," King said.