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

Paramedics initially responded to Kelly’s Atlanta home around 3 p.m. EST after his mother called 911 asking for medical assistance, according to the report.

When help arrived, paramedics found 34-year-old Kelly lying on the living room couch unresponsive and with “no life signs.” The medics attempted to revive Kelly, to no avail.

Kelly was immediately transported to a nearby hospital, where he was pronounced dead a few hours later.

After the death, cops spoke with Donna Kelly Pratt, Chris’ mother, who told police that the night before Kelly’s medical emergency, he had taken a mixture of heroin and cocaine, commonly known as “speedballs.”

Donna told police she had personally taken Kelly home to recover from the drug use, as she had done several times before. Donna told cops Kelly had felt nauseous all morning before passing out.

According to the report, Kelly’s mother and Kelly’s uncle both told investigators the rapper had an “extensive history of drug use.”

As previously reported, Kelly had a phone interview with The Streetz Morning Grind radio show in Atlanta just hours before he passed out … and sounded like he was in bad shape.

In fact, Kelly made reference to his hard-partying ways, which seemed to upset the DJ, who was personal friends with the rapper.