Talib Kweli Instagrammed this photo of Pumpkinhead along with a touching message.<Talib Kweli/Instagram

New York City indie-rapper Robert Diaz, known as Pumpkinhead, passed away yesterday, June 9 at 39 years old. The cause of death is unknown at this time. He's survived by his two sons and his wife, who is pregnant with their first daughter.

A resident of Park Slope, he is known for his collaborations with Talib Kweli, Murs, Del the Funky Homosapien, among others. Many took to social media last night and this morning to express their sadness and shock over his death:

Just finding out I lost a great friend today. RIP Robert Diaz AKA Pumpkinhead. Robert and I went to PS 282 together in Brooklyn, 4th grade. We then reconnected when he became an MC during the indie era of the late 90s. He signed to Makin Records, I signed to Rawkus. Then PH went on to reinvent himself again in the new battle rap era. He LOVED MCing and was great at it. To lose such a great human being so early in his life, man. No words. There is a fraternity of artists who were around for all of this. PH inspired us all. He will live on thru us even though his physical presence will be missed. RIP Robert Diaz.

A photo posted by Talib Kweli (@talibkweli) on

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