Note: This article may contain commentary reflecting the author's opinion.

A Missouri shopper reportedly shot and killed a robbery suspect who was attempting to hold up a gas station on Saturday morning – saving the store attendant’s life in the process.

Lance Bush, held the female attendant at knifepoint while she emptied the cash register, and this caught the attention of the hero customer in the parking lot, according to WLTX.

The concealed carrying customer repeatedly asked if everything was alright, but could tell the dynamic was violent.

“He (Bush) grabbed a backpack and ran inside, looking for I guess the clerk. I saw him grab her and drag her to the front to the counter, something wasn’t right when I saw that, so me being concealed carry, I had my gun on me and I just waited,” the customer told CBS 19.

“I walked up to the door and I saw him with a knife to her throat,” he continued. “She was emptying out the cash register and I took a step in and peeked my head in to ask if everything was okay. I couldn’t see his face, but he was saying yes, but I could see her face she was saying no, she was scared.”

Bush then ran from the corner of the counter to attack but was stopped when the customer fired four shots, dropping the suspect to the ground.

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The customer then stayed on the scene until authorities arrived and Bush was declared deceased — after being taken to the hospital.

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Bush’s vehicle was later determined to have been stolen from the nearby Maryland Heights. Bush is also the top suspect for two other armed robberies that had happened earlier within the hour, according to police.

The concealed-carrying customer has not been charged with any crime.

This gas station stand is just one of many recent and prominent self-defense cases, highlighting the importance of preserving self-defense rights within the United States.

Had the shopper not been free to exercise his Second Amendment rights and arm himself, which is the case in many Democrat-run cities, things could have ended very differently and far more tragically. Hence, the importance of preserving America’s Constitution.