The musician promoted his latest TV show and alcohol brands in an Instagram post about Williams who was found dead in his Brooklyn apartment on Monday.
An investigation into the cause of death is ongoing.
“RIP micheal k williams,” he added, misspelling the actor’s name.
In other posts, the rapper referenced his years-old feud with the actor and an unconfirmed report about drug paraphernalia being found at the scene of his death.
The three posts have since been deleted.
But one in which 50 Cent references the backlash to his comments ― and doubles down on them ― remains on the platform.