Alexander Pacteau planned to find a victim on the night he brutally killed Cork nurse Karen Buckley in Glasgow, police believe.
It has also emerged that he previously stood trial in 2013 for sexually assaulting a 24-year-old woman.
After Pacteau pleaded guilty to murder, the detective who led the investigation said he believed the 21-year-old had a premeditated plan to attack somebody on the night Karen was killed.
Det Supt Jim Kerr said that he did not believe Pacteau’s account that a “trivial argument” with Karen led him to kill her .
“We would describe him as being callous and calculated and that could have happened to any female that night,” said Det Supt Jim Kerr. “We can’t see anything from our investigation that would have predicted what he did on the night in question.
“There was a premeditated plan that night to find some victim.
“There’s no question he saw an opportunity. But whether that was Karen Buckley or somebody else remains to be seen.
“We have no information as to why she got in the car, all we know is she left that nightclub to go home to the city centre and he headed off in the car in that direction.”
He also revealed the scale of the operation. “We visited and obtained CCTV footage from over 49 premises, both private and public sector, and we viewed and examined over 1,900 hours of CCTV footage so it was crucial in our investigation.”
It also emerged that, in 2013, a jury found Pacteau not guilty of sexual assault.
He reportedly told Paisley High Court: “I would never make an attempt to sexually assault this woman. I believe rape is the lowest of the low. I’d rather be charged with murder than attempted rape.”
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