Suspect's ex-girlfriend testifies 'Cathouse' star killed as part of plot against drug dealer

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The former girlfriend of a man accused of killing a prostitute featured on HBO's "Cathouse" series and three others says she overheard him plan the Oklahoma City shootings.

Karine Sanders testified in Oklahoma County District Court on Tuesday during a preliminary hearing for 34-year-old Denny Edward Phillips. Sanders says the shootings involved drugs and money.

Phillips is charged with first-degree murder in the November 2009 death of 22-year-old Brooke Phillips, who had worked as a prostitute at the Moonlite Bunny Ranch, a legal brothel featured on HBO. She was not related to Denny Phillips. The other victims were 22-year-old Milagros Barrera, 25-year-old Jennifer Ermey and 32-year-old Casey Mark Barrientos.

Each of the victims was shot and stabbed and their bodies were set on fire.