New York rapper Ja Rule is fed up. The hip-hop veteran has delivered a major roasting session on longtime rival 50 Cent and his upcoming “Black Mafia Family” TV series.

This week, Ja hit up Instagram to let loose on 50 Cent and his recent comments about an upcoming Murder Inc. movie production.

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On Tuesday, 50 Cent lit up his Instagram page going in-in on Ja Rule and Murder Inc. CEO Irv Gotti for trying to secure Jamie Foxx to star in an upcoming movie based on former drug kingpin Kenneth “Supreme” McGriff.

Recently, buzz developed about Gotti and Rule putting together the Supreme flick.

A few weeks ago, Christ Gotti was guest on iHeart Radio to open up on his recent ventures, including breaking news that a movie centered around the Supreme Team crew is in the works. Gotti, who’s producing the biopic, has already got Jamie Foxx on board to play Kenneth ‘Supreme’ McGriff, who we’re assuming will be offering his input as well. Currently, Supreme is serving life in prison, without the possibility for parole on alleged murder-for-hire and drug trafficking activities. (OnSmash)

Last year, tensions rose after 50 Cent’s kid Marquise posed alongside Supreme’s son.

As for the hate for the other guy in the photo … it presumably comes from 50 Cent’s longstanding beef with his father, Kenneth “Supreme” McGriff. The 2 are archenemies, and Griff — a former Ja Rule and Irv Gotti associate — allegedly once plotted to kill 50. Supreme is currently serving a life sentence for murder conspiracy and drug trafficking. (TMZ)