Man stabbed to death outside Brooklyn bar

A man was stabbed to death after an argument outside a Brooklyn bar Tuesday, police sources said.

The 30-year-old victim got into it with another man outside Kaché Restaurant and Lounge on Flatbush Ave. near Avenue O in Marine Park around 8:15 p.m., cops and sources said.

The argument escalated and the man was stabbed in the chest.

The attacker took off on nearby Quinton St., where he ditched the bloody knife in a planter on the sidewalk, sources said.

Meanwhile, medics rushed the victim to Kings County Hospital, where he was pronounced dead about half an hour after he was stabbed, cops said.

There were no immediate arrests as police worked to track down the slasher.