The stalker suspected of killing model Gracie Spinks in an alleged murder-suicide was a 35-year-old who became infatuated with her after just one date.
Michael Sellars, 35, is believed to have fatally wounded the 23-year-old horse enthusiast - who was found dead in the picturesque village of Duckmanton in Derbyshire on Friday morning.
Sellars, whose body was reportedly found half-a-mile away, is believed to have become 'obsessed' with Ms Spinks after the pair went on a date, according reports.
It comes as the police watchdog has been contacted over the investigation into the model's death.
Derbyshire Police has now confirmed it has referred itself to the Independent Office of Police Conduct (IOPC) but has declined to confirm the reason for the referral.
In the wake of her death, it was revealed Ms Spinks had been bothered by a man who friends said was 'obsessed with her'.
One source claimed Ms Spinks had obtained a restraining order against the unknown man after he kept turning up at the stables where she went riding.
Michael Sellars, 35, is believed to have fatally wounded the 23-year-old horse enthusiast - who was found dead in the picturesque village of Duckmanton in Derbyshire on Friday morning
Derbyshire Police has referred itself to the police watchdog over into the death of part-time model Gracie Spinks, 23, (pictured) who was killed in an apparent murder-suicide on Friday
Friends of Miss Spinks (pictured), who worked for a local e-commerce company, posted tributes on Facebook on Friday night
The walker took the backpack to her local police station but was told nothing could be done.
It is not clear if the referral to the IOPC is because of prior contact with Ms Spinks and an alleged stalker or because of the weapons that were handed in which Derbyshire Police have not confirmed is linked to Ms Spinks' death.
Speaking to MailOnline, the force confirmed it had referred itself to the watchdog while an IOPC spokesman added: 'We have been notified that a referral is being made by the force. When we receive it, we will carry out an assessment to determine what further action is needed by us.'
Six weeks ago a walker found a backpack filled with a cache of weapons on a farmer's track just 100 yards away from where Ms Spinks was killed.
Anna White said she brought the bag to her local police station but was told nothing could be done.
On Friday, roads in and out of the area were cordoned off after Ms Spinks' assailant reportedly fled towards a country park.
A primary school went into lockdown and local businesses were issued with a description of a suspect in grey jogging bottoms and a black top.
But by lunchtime police said the situation had been 'resolved' after the body of a man in his 30s was discovered around half a mile away.
Six weeks ago a walker found a backpack filled with a cache of weapons on a farmer's track just 100 yards away from where Ms Spinks was killed. It also had a note reading 'don't lie'
A water bottle was among the cache of weapons found inside the orange backpack
After realising the bag she found was close to the scene of Ms Spinks' death, Ms White wrote on social media: 'I found a backpack six weeks ago on the farmers track directly opposite Tom Lane. The contents of which were extremely disturbing.
'I contacted the police and handed the bag to them. They basically said they wouldn't be investigating further despite the obvious fact that DNA would have been recoverable (water bottle and clothing).
'If this is in anyway linked to this incident then the police have some major questions to answer. The whole purpose of me handing it in was in the hope that a future tragedy could be prevented. They may not be linked but it does seem very odd !!'
Friends of the 23-year-old, who lived in Old Whittington, around five miles from where her body was found, have revealed how she had long been bothered by a man, said to have been 'obsessed' with her.
Pictured: Anna White wrote a post on social media: 'I found a backpack six weeks ago on the farmers track directly opposite Tom Lane. The contents of which were extremely disturbing'
Now friends of the 23-year-old, who lived in Old Whittington, around five miles from where her body was found, have revealed how she had long been bothered by a man, said to have been 'obsessed' with her. Pictured, the backpack found six weeks before her death
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