A rep for the group, which had the hits All I Do is Think of You and Spread My Wings, told TMZ that Warren was surrounded by family when he passed away.
Reggie rose to fame as part of the R&B band Troop (Image: GETTY)
Reggie passed away at the age of 52 (Image: GETTY)
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Over the years, the group - whose name stands for Total Respect of Other People - has had three number one singles, with ten top ten on the Billboard R&B Singles chart.
They are probably best known for their songs All I Do Is Think of You, Spread My Wings and I Will Always Love You from their second album Attitude.
Three of their five albums are certified gold with one certified platinum.
The group briefly parted ways in the late 90s, but reunited to go on tour from the 2000s onwards, having been joined in concert by the lies of Boyz II Men, Keith Sweat, Jon B, Brian McKnight and other artists and groups that were popular in those days.