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"Kris Kross" rapper Chris Kelly had been using a combination of cocaine and heroin the night before his death, this according to the police report obtained by TMZ.

According to the report, cops responded to Kelly's home Wednesday afternoon and found the 34-year-old lying on the living room couch.

Both paramedics who arrived to the scene said Kelly was unresponsive and had "no life signs." They attempted to revive Kelly, to no avail.