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New York’s rap scene lost one of its staple players on Tuesday morning. Pumpkinhead (born Robert Alan Diaz) died at the age of 39 due to an undisclosed reason. Friend and producer Marco Polo was one of the first to announce the news.

Fellow Brooklyn rhymer and fourth-grade classmate Talib Kweli shared his thoughts on P.H.’s death.

Diaz got his start battle rapping in Park Slope when he was 10 years old, but first attracted attention with his dancing, according to his label’s website. He wanted to take up rhyming and eventually became a force in the competitive rap scene.

He broke through on the radio in 1997 with “Dynamic,” but his most notable work was his under-the-radar but well-received 2005 album Orange Moon Over Brooklyn, which Marco Polo helped produce. Diaz was married with two sons, according to Billboard.