A US Postal Service worker was fatally stabbed while on duty in a Harlem deli during a dispute over a line for sandwiches. The incident occurred in broad daylight, drawing immediate police attention. A 24-year-old woman has been arrested and charged with murder following the altercation. Eyewitnesses reported the scene was chaotic and frightening, as the postal worker was simply ordering lunch when the attack took place. The NYPD confirmed the worker was killed in an unprovoked assault, emphasizing the alarming rise in violence against service workers. A person of interest was initially taken into custody, but subsequent investigations led to the formal charges against the woman.