Cassandra Lynn had indulged in large amounts of cocaine and booze before she was found dead in a bathtub.
Sources familiar with the investigation tell us … Cassandra had flown to L.A. on January 14 and was the guest of a celebrity photographer.
We’re told Cassandra complained when she landed she was not feeling well.
Sources say they went to the photog’s home in the early evening and partied.
According to our sources … the photog told law enforcement they had sex and did large amounts of coke and guzzled lots of champagne.