Phil Spector was accused in court of carrying out a sexually motivated murder on Wednesday.
Los Angeles Sheriff's Detective Mark Lillienfeld testified that when he first arrived at the music producer's Los Angeles mansion on February 3, 2003, to investigate Lana Clarkson's death he immediately thought her killing "had sexual overtones to it."
Lead investigator Lillienfeld said a romantic candlelit evening had been planned and he discovered a partially empty Viagra packet - used to treat impotency - as well as two false eyelashes next to a glass of brandy and a bottle of tequila.
He told the court: "The home was dark. There were candles lit on the fireplace. There was alcohol out in front of the fireplace on a coffee table.
"Miss Clarkson, the way she was dressed, the person that she was, the person that the defendant was - all those facts in my mind played into a sexually motivated murder. The Viagra was a piece of evidence that would perhaps prove later on to be important."
Lillienfeld said the foil Viagra packet, containing one pill with two empty sockets, was found in a briefcase with Spector's initials on it lying a few feet away from Clarkson's body.
The 40-year-old actress was discovered slumped in a chair wearing a blood-soaked black dress with .38-caliber revolver at her feet. She died from a shot to the mouth.
During cross-examination, Spector's lawyer Bradley Brunon asked the homicide detective if he was aware a rape test performed on Clarkson came back negative.
Lillienfeld said he was not aware and also conceded he had no evidence to suggest Spector took Viagra on the night.
Brunon also asked: "You didn't find any tears or rips associated with someone tearing at her or pawing at her?"
Lillienfeld replied: "I did not."
Meanwhile, one of Spector's former defense team, attorney Sara Caplan, could be charged with contempt after refusing to testify about her findings at the crime scene.
Spector's defense team insists Clarkson accidentally committed suicide.