Brooklyn rapper Sheff G is serving a couple of years upstate for criminal possession of a weapon in the second degree.

Before he went away he had beef with 22Gz, who hails from the same Flatbush neighborhood.  In fact,  Sheff's hit "No Suburban" was a response to 22Gz's track "Suburban" by 22Gz.

Even with Sheff locked up, the rancor continues.

A few days ago, 22Gz jumped on Twitter and suggested Sheff got extorted in prison, referring to him by his "Godfather" moniker.

“The ‘Godfather’ in jail getting extorted Good morning. N*ggas supposed to be starting some sh*t," he typed in a partially deleted Tweet. “These rappers be waiting too long to live their raps and then get wrapped up and can’t hold it down.”

Sheff, who has access to social media, pushed back hard on that.

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A post shared by Godfather... (@sheff_g)

"I done hurd I turn this and that .. done
hurd im getting extorted and allat lies and rumors that the broke dirty and worthless has made up Imao, whats next?

Niggas better ask anyone they kno up in these upstate prisons about me ! , million dollar nigga chilling in general population never been disrespected without the boomerang effect, all yu got is ya name and ya word .. and my name would never be tainted, my reputation speaks for itself... mr front line action ... mr movie himself!

The face of a real n*gga yu hurd .... free all my guys, they say if yu dont got no haters yu aint doing nun right , lol.. shout out to my whole label, my album went number 1, and we got more than over 16 plaques coming in , all behind bars shout out to us
winners circle ... shout out my fans i love yall ill be back soon," he typed.

22Gz been getting quite aggressive with his drill peers.  Earlier this month, he outed Fivio Foreign as an industry plant.