Police arrested man suspected of killing ex-girlfriend and posting graphic video to Facebook
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Mark Stephen Mechikoff, 39, is accused of fatally stabbing Claribel Estrella in her apartment, filming her dying moments, and posting the video on Facebook.
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Mechikoff pleaded not guilty to first-degree murder, claiming his earlier confession was AI-generated.
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Prosecutors say Mechikoff was proud of the killing and wanted his Facebook followers to see what he'd done.
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A Facebook friend in Florida saw the video and alerted authorities, who used cell phone tracking to locate the crime scene.
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Estrella had briefly dated Mechikoff before breaking up over his abusive behavior; he remains jailed with no bail.