'Thank you': Brooklyn man stabbed to death after asking attacker to be more polite

A verbal altercation took place between two men in Brooklyn after one of them didn't say "thank you" for the other holding the door open. This led to the fact that one of them was stabbed to death, reports Independent.

The dispute began with a verbal altercation at a 4th Avenue store in Park Slope around 22:20 p.m. on September 20, but escalated when a man holding the door was stabbed outside the store.

The 37-year-old victim, whose name has not been released, held the door of the store for another customer, also unidentified, and got into an argument with him because he did not thank him for this gesture of courtesy.

"Why don't you say, 'Thank you for opening the door?' asked the victim, according to Haref Alsaidi, a store worker.

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“I didn’t ask you to open the door for me,” the suspect replied, Alsaidi shared the details of the incident.

“It was only about the fact that he did not say “thank you” for opening the door to him,” the eyewitness explained.

Alsaidi said the verbal dispute escalated into a fight outside the shop door. According to eyewitnesses, the victim allegedly taunted the man, asking him to "cut me if you can."

The suspect, who was on his e-bike, grabbed a knife and allegedly stabbed the man in the stomach and neck with it, authorities said.

“The victim started screaming: “He stabbed me, he stabbed me!” Alsaidi relayed his words.

He recalled how the victim was "bleeding out" as the suspect fled.

“I tried to downplay the situation and told the guy, ‘Just put the knife away. He's not worth it. It's not worth it," Alsaidi said. “I did everything possible to reduce the escalation of the conflict, but nothing worked.”

The man was rushed to a Brooklyn hospital where he was pronounced dead.

The accused is on the run and police have asked anyone with information to contact the NYPD Crime Enforcement Hotline at 1-800-577-TIPS (8477) or tweet @NYPDTips for any information about the incident.

The suspect was heading south down Fourth Avenue toward Carroll Street, reports Dailymail.

Sources said the man was wearing a black sweater, white shirt and jeans, and was carrying a black backpack.