An irate customer fatally stabbed a worker inside an East New York deli after being told the store didn’t sell cigarettes, according to police.

A 68-year-old man has been charged with murder after allegedly choking his 64-year-old sister to death inside their Crown Heights home, police said.

Police say the shooting happened around 4:38am outside Island Cz Lounge, near the corner of Utica Avenue and Farragut Road.