A 31-year-old father-of-four was shot dead outside a McDonald's in Las Vegas this weekend, all because he forgot to hold the door open for a woman.

Mohammed Robinson was on his lunch break around 11:45pm on Saturday when he went across the street to a McDonald's for a meal.

As he was going in, he allegedly forgot to hold the door open for a woman who was leaving.

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Mohammed Robinson, 31, was shot to death outside a McDonald's in Las Vegas, Nevada, on Saturday

Above, the McDonald's in North Las Vegas where the deadly shooting happened

Witnesses say that Robinson, a father of four, failed to open the door for a woman who then complained to a man she was with, who shot Robinson

That woman got upset and then told a man who she was with, who got into a confrontation with Robinson outside the restaurant and then shot him.

Robinson was rushed to University Medical Center in critical condition, where he was later pronounced dead.

His killer remains at large, but police say the shooting was caught on surveillance cameras which they will try to use to identify him.

Robinson's death has left his family reeling - sending them bouncing back and forth between grief and anger for what happened.

Robinson's death has left his family both deeply saddened and angry over the petty shooting. On the left, his 14-year-old daughter Miniya and on the right his mother

According to Go Fund Me, he is survived by his mother, girlfriend, four children and two step-children.

Mohammed's girlfriend, who wished not to be identified on camera for fear of retribution, says his death is all the more tragic because he was a very respectful man and would never have purposefully not held the door open for a woman.

'He was the utmost respect for his elders. Yes, ma'am - no sir. He's not confrontational even when we would argue he'd walk away,' his girlfriend told Fox 5 Vegas.

Mohammed's 14-year-old daughter Miniya Sampson agreed.

'My dad would open the door and hold it for the lady but he probably didn't hear her,' Sampson told KSNV.