A 46-year old man was stabbed to death in Brooklyn Tuesday night, cops said.

The victim was found unconscious with multiple stab wounds to the chest in front of an apartment building on Lincoln Place near Ralph Avenue in Crown Heights just after 7:30 p.m., according to police.

The unidentified victim was transported by paramedics to Kings County Hospital, where he died, authorities said.

It’s unclear if the victim and his attacker were known to each other.

Police didn’t immediately identify any suspects or a possible motive for the murder.

Cops were searching for the suspect Tuesday night.