Yesterday, forensic scientist Crenfeldt gave evidence for the prosecution about four spots of blood found on the fridge in the accused's apartment.
The was also a non-visible blood stain that was revealed on the fridge by luminol testing.
She told the jury yesterday: "In her expert opinion, the blood pattern likely came from an object with blood on it that had been cast-off through the air and landed in a line on the fridge".
"The object could be a limb on a human body," she confirmed to Crown Solicitor Brian Dickey.
In cross-examination Ian Brookie questioned her about the accuracy of this evidence.
"You can't say much about the four visible blood spots but you have used the non-visible blood to firm up why they are there," he said.
"Could the blood not have come from any number of different mechanisms?" he asked her.
Crenfeldt maintained the non-visible spots are consistent with a "cast-off" from an object.
"But you can't tell us what the object was, you can't tell us when it happened?" he said.
"No," she confirmed.
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