Rodney King was under the influence of SEVERAL substances at the time of his death -- including alcohol, marijuana, cocaine, and PCP -- this according to Rodney's death report.
According to the report, the cause of death is listed as accidental drowning -- but the drugs were contributing factors.
The PCP is interesting because there was a theory around the time of the 1991 beating that Rodney displayed super-human strength because he was on PCP at the time. However, blood tests for the drug turned up negative.
TMZ broke the story ... King's fiancee discovered his body at the bottom of the pool at the couple's home in Rialto, CA on June 17.
King became famous in 1991 when he was the victim of police brutality at the hands of the LAPD. The officers involved in the incident were acquitted the following year and the announcement of the verdict led to the Los Angeles riots.