Nicki Minaj says her "precious cousin" was shot and killed in Brooklyn yesterday ... and TMZ has learned the shooter is still on the loose.
Law enforcement sources tell TMZ ... 27-year-old Nicholas Telemaque was killed around 2:40 AM on July 4 from "multiple gunshot wounds to the upper torso."
Minaj posted photos and messages on Twitter ... saying, "Lived in Brooklyn his whole life. My precious cousin. My baby. Killed last nite."
We're told cops are investigating the incident -- but so far, no arrests have been made.