Police who tracked down murderer Alexander Pacteau have been questioning escorts in Glasgow in the fear the he may have been violent towards other women.
Sources have revealed that phone records belonging to the twisted 21-year-old have shown a number of calls made to escorts in his home city in the weeks running up to Karen Buckley's (24) death.
It's understood that police are following "several leads" found on phones and laptops belonging to the Glasgow native who is to be sentenced for the murder of the popular Cork student and nurse tomorrow.
In a post on Saafe.Info last month, a website forum used by escorts used to discuss personal safety, one woman said she had given a statement to the police.
In the post she said she had a call from a Police Scotland detective who asked her about "the Karen Buckley murder and Alexander Pacteau."
The poster stated that she had been contacted by Pacteau, not knowing who he was, in the nights before Karen's murder, and her number had been found on his phone.
She said thankfully she never met him but was asked to give a statement to police.
"I have had shivers ever since," she wrote, "thinking of how I could have met him in Glasgow, that night. RIP Karen Buckley."
Last month, company director Pacteau admitted repeatedly hitting Ms Buckley with a spanner and strangling her in his car in April.
The vicious killer is now in protective custody in one of Scotland's toughest prisons, HM Barlinnie Prison, after the shocking revelations of how he bludgeoned Karen to death and then attempted to dissolve her body in a barrel of caustic soda.
He faces a life sentence after he pleaded guilty to the murder of the Cork nurse at Kelvin Way in Glasgow just minutes after Karen had left 'The Sanctuary' nightclub alone.
The former public schoolboy lured innocent Karen into his grey Ford Focus car with the offer of a lift home before first trying to strangle her and then beating her to death with a heavy 30cm spanner.
For a time he drove around Glasgow with Karen's dead body in the passenger seat of his car before trying to dissolve her remains in caustic soda in the bathtub of his flat and later in a plastic barrel.
He then hid the barrel in a storage shed on an isolated Glasgow hill farm.
Tomorrow's sentencing hearing is to be aired on TV.
It's no surprise that the hard, gritty streets of Glasgow have proved the inspiration for so many top crime dramas. 'Taggart' and 'Cracker' all owed their popularity to the harsh realism drawn from a Scottish metropolis that survived decline from the second city of the British Empire, to savage Luftwaffe bombing raids and the no-less-damaging closure of the shipyards, mines and steelworks that once underpinned its wealth.