Though the details surrounding his untimely passing are unknown right now … Nate Dogg‘s family believes that complications from the two strokes he had over the last couple of years caused his death.

Nate’s close friend and manager Rod McGrew tells TMZ that his death was unexpected since he was making significant progress in the recovery from his most recent stroke in 2008. According to McGrew, Nate was “95% recovered from the first stroke in 2007” … when the second stroke occurred in 2008 … leaving Nate partially paralyzed and causing partial memory loss.

But McGrew says Nate had “cognitively fully recovered” — meaning he got his memory back and was fully alert and aware all the way up to his final days. McGrew also released the following statement on behalf of himself and Nate’s family.

“We appreciate the enormous outpouring of response from all over the world. We greatly appreciate that and thank everyone for their prayers and support. We know that Nate will be hanging out with his good friends 2Pac and Biggie.”

We will keep Nate’s family and friends in our prayers…

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