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The General Manager of Mogul Vision, D4vd 's record label -- who appeared before the grand jury for the last 2 days regarding the death of Celeste Rivas -- was way more than a record exec ... he was involved in D4vd's day-to-day life.

Robert Morgenroth is someone the grand jury prosecutor is intensely interested in ... as we reported, we overheard him say in the courtroom hallway that the prosecutor hammered him on why he didn't call the police. We don't know the context, but it's clear it involved D4vd, because he's a suspect in Celeste's death. Facebook / bobby.morgenroth

Morgenroth is way more than a G.M. -- he was also D4vd's day-to-day manager. Turns out, there were 2 managers. The other is Josh Marshall , who actually founded Mogul Vision and,

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