Police in Gary were able to track down the man after he allegedly shot a fellow customer during a fight at a grocery store

A debit card left behind at the scene of a fatal shooting helped police in the US state of Indiana track down and arrest a man suspected of killing a fellow customer at a grocery store.

The violence on Monday evening was caught on the surveillance camera of the store in Gary, Indiana – video which shows two men in their 40s getting into a fight near the checkout counter.

One man can be seen pulling out a gun and shooting the other, a 48-year-old Gary resident. The shooter then picks up his items, walks around the victim’s body and exits the store.