Police are searching for a man who detectives say stabbed then robbed a shopper outside of Greenbriar Mall.

The incident happened around noon Friday. The good Samaritan who came to the victim's rescue spoke about helping the man.

William Peoples, a student at the Everest College campus at the mall, walked to the food court for lunch. On his way back to class he saw a man who fell to the ground bleeding. He says he immediately stepped in to help.

“I seen (sic) blood starting to come out from his lower abdomen. That's when I immediately acted. Took off my undershirt,” Peoples said. “I just immediately acted. I was, like, I got to help him, I have to help him."

He applied pressure to the man's stomach to stop bleeding from the stabbing that happened just moments earlier.

Atlanta police say the victim paid his power bill at the mall around noon. Then another man walked up, stabbed him in the stomach and took his wallet.

Peoples said he witnessed a friend who was a victim of violence die when he was only 15 years old, and he felt compelled to do something.

“If I had gone on about my business, he probably still wouldn't even be alive,” Peoples said.

Peoples said he is praying for a full recovery for the man he helped. As for the man who stabbed and robbed him, Peoples wants to know why.

“If people want to act ignorant and do violence unto others, well, at the end of the day, it's not me that's going to judge you. It's God,” Peoples said.