The victim of a 'Hannibal Lecter' killer who 'ate her face while he was high on cocaine' had only met him hours prior to the horrific attack, it emerged today.

Shopworker Cerys Yemm, 22, was allegedly murdered by 34-year-old Matthew Williams after he invited her back to the Sirhowy Arms Hotel in Caerphilly, south Wales, following a night out.

Williams, who has not been identified by police but has been named locally - was allegedly eating his victim's eyeball when security staff burst in on the shocking attack.

Police were called to the scene and found Miss Yemm unconscious on the floor with severe facial injuries.

Officers Tasered Williams - who was only released from prison two weeks after being jailed for attacking his ex-partner - and he became unresponsive. He later died in police custody.

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Matthew Williams, 34, (right) is suspected of murdering Cerys Yemm (left) by 'eating her face', before he died after being Tasered by police in Caerphilly, south Wales. He had supposedly met her in a bar only hours earlier

The 34-year-old man has not been identified by police but has been named locally as Matthew Williams. The pair were found at the Sirhowy Arms Hotel in Argoed, Caerphilly, south Wales, in the early hours of Thursday

Today the probation service was said to be launching an inquiry after it emerged Williams was apparently not being monitored despite being released from prison just two weeks ago following a five-year sentence for an attack on his ex-girlfriend.

Friends told today how Miss Yemm only met Williams hours prior to the brutal killing, after he offered to get her a taxi home following a night out.

They said the Next shop assistant must have been persuaded to go up to Williams' hotel room - at the B&B which was being used as temporary accommodation for homeless people - before he launched the horrific attack.

A friend of the pair said: 'They met that night in a bar and got chatting for the first time.

'They had been drinking and he persuaded him back to the hotel and said he'd get her a taxi home.

'Once he got her back in the hotel he must have invited her up to his room and that's where he attacked her.'

Miss Yemm's heartbroken mother Paula, 49, was being comforted at her detached home in Oakdale near Blackwood, south Wales, today.

Her brother Cavan, 25, was in tears as he opened the door of the family home - a smart detached house on sleepy street. Her sister Shannon said: 'We just need to be left alone to grieve'.

A police family liaison officer was also at the property.

Police have been trying to piece together the last hours of Miss Yemm's life and officers have been carrying out forensic tests on a silver BMW believed to belong to Williams - who was from the village of Blackwood and nicknamed Fifi.

Miss Yemm (pictured left with a friend) met her alleged killer just hours prior to the horrific incident yesterday

Miss Yemm (left) was a big fan of TV series Vampire Diaries and even dressed up as a zombie for Halloween

Friends of the shopworker said she was chatted up in a pub by Williams before he invited her back to the hotel

Officers are trying to work out whether he drove her back to the hotel in the sleepy village of Argoed, where he was found 'eating her to death while high on cocaine'.

Lyn Beasley, who lives close to the hotel, said: 'He went Hannibal Lecter on the woman, he gouged her eyeball out, ate them and ate half her face.

'He had just been released from prison and was high on coke.'

And Jill Edwards, who also lives near the hotel, said: 'This animal was eating this girl to death. He murdered her so police stopped him - good on them.

'Security said they told him no girls in his room and he didn't answer, when they opened his door he was eating her face.'

Miss Yemm, who worked in sales at clothing giant Next, was described by friends today as a fun-loving girl who had been at a Halloween party with friends just days before the gruesome attack.

She was a huge fan of TV series Vampire Diaries and that night she had dressed as a zombie with friends.

She used the online nickname 'Yummy Yemmy' and knew of Williams through mutual friends.

Williams was described as 'an infamous character' in his hometown of Blackwood with a reputation for violence. He had only just been released from prison after serving half of a five-year sentence for attacking former girlfriend Emma Thomas, 38, at her home - which is next door to Williams' own family home.

Mother-of-two Ms Thomas said: 'He made my life hell. I've had nothing to do with him since we broke up more than two years ago.

'It is a terrible shock and I'm very sad that this has happened.'

Miss Yemm, 22, nickamed 'Yummy Yemmy' (pictured left with two friends), worked as a shop assistant at Next

Miss Yemm's family were grieving at the family home today (pictured) following the horrific attack

Miss Yemm and Williams were seen drinking together shortly before the attack in the early hours of Thursday and Williams was described as 'seeming sober'.

However, he is thought to have taken cocaine before the attack in which he ate her eyeball and chewed half of her face.

Shelly Davies, a friend of Miss Yemm, said: 'I just keep thinking of how frightening and painful it would have been for her

'I feel sick to my stomach, it's horrific to think that one person can inflict some much brutality onto another.

'I had bad dreams all night and I feel exhausted.'

Another friend, Kathy Young, said: 'My thoughts are with her family.

'No one should have to go through this, this is horror movie stuff. Not happening in your hometown.'

Miss Yemm had been a pupil at Oakdale Comprehensive School and had studied Health and Social Care at Crosskeys College.

One businessman in the former mining village of Oakdale said: 'Everyone here knew Cerys - we watched her growing up.

'She was a lovely girl, smart, attractive and brought up by a very good family who she was extremely close to.

'They're nice people - they must be going through hell.'

A neighbour added: 'I can't bring myself to think about what happened to her, she was so nice, she would always say hello.'

Miss Yemm had seen her own former boyfriend Mathew Hayman jailed after breaking up with him in October last year.

Hayman, then 27, tried to kill himself after they split by setting his house on fire.

He lit up his bathroom before turning on the gas cooker - and it was 'pure chance' his house in Abertillery did not explode.

Hayman admitted arson when he appeared at Newport Crown Court and was jailed for three and a half years.

Probe: The man suspected of murdering his girlfriend who then died after being Tasered by police allegedly gouged out his victim's eyes and was found 'eating her face' in a south Wales village, witnesses claim

Investigation: Gwent Police said it had referred the incident to the Independent Police Complaints Commission

Police are continuing to investigate the double death at the hotel and the 'Hannibal Lecter' attack has been met with revulsion in the village.

The horrific 'Hannibal Lecter' attack on the young woman has been met with revulsion in the former mining village.

A security guard at the hotel is believed to have rung 999 to say he had seen the killer eating the woman.

Gwent Police confirmed a murder investigation had been launched into Miss Yemm's death and confirmed a Taser was discharged on Williams. He later died at the scene despite police trying to save him.

Officers refused to comment on the specifics of the incident but sources confirmed Miss Yemm received substantial facial injuries.

A Gwent Police spokeswoman added: 'We are not looking for anyone else in connection with the incident and an investigation is underway.'

The Independent Police Complaints Commission is investigating Williams' death because he was in police custody after being Tasered and arrested.

A spokeswoman for the watchdog said: 'The IPCC is independently investigating an incident overnight in Blackwood in which a man and a woman have died.

'Gwent Police referred the incident to the IPCC early this morning.'

A Home Office pathologist and scenes of crime officers were at the hotel today trying to discover how the couple died.

Post-mortem examinations on Williams and the unnamed woman are expected to be carried out within the next couple of days.

On the scene: A local councillor said Argoed, a village in south Wales, had been 'hit for six' by the deaths

Examining the area: The hotel is located in the Sirhowy Valley in a village of about 2,500 people

Response: The Welsh Ambulance Service confirmed they were called to the incident at around 1.30am

Witnesses reported seeing forensic officers in white overalls at the scene, as well as a police cordon which blocked access to the hotel as well as the local Baptist church's graveyard.

Police were also seen carrying out forensic tests on a silver BMW believed to belong to Williams which was parked outside the hotel.

TASER GUN USE IS ON THE RISE Police are blasting five people a day with 50,000-volt Taser guns as use of the controversial weapons has soared. The stun-guns - which deliver a powerful electric shock to incapacitate the target - were drawn, aimed or fired a record number of times in the last year, figures revealed last month. Home Office data showed Tasers were used 10,488 times in the 12 months to the end of June - a 13 per cent increase compared with the 9,289 on the previous year. Over that period, police zapped 1,693 people with Tasers - equivalent to shooting five people a day. Senior officers insist Tasers are used as a weapon of last resort, when there is such a severe threat of violence that force is needed to protect the public, police or a culprit. But critics have accused the police of using them as a 'compliance tool' – and claim this is proved by the relentless rise in their use. Concern is mounting that 11 people have died after being Tasered since the controversial guns were introduced a decade ago. Ice cream factory worker Jordan Begley, 23, from Gorton, Manchester, had a suspected heart attack after being hit with the stun gun outside his terraced house after a disturbance with his neighbours in July last year. Advertisement

Local resident Cindy Farr, 41, told MailOnline of a 'significant' police response, adding: 'You do have police going back and forth regularly but I've never seen any problems. It is quite out of character.'

Grandmother Susan Gibbs, 71, who lives near the hotel, said: 'I'm not really surprised that something like this has happened. Police seem to be here every other night to sort out the violence.

'This was a quiet peaceful village before it was opened, now it's got to the stage where our houses are being devalued because of the problem. We've even had people sleeping rough overnight in the hedge rows.

'Once of the bodies was brought out wrapped in a brown bag on a stretcher.'

June Trace, secretary of Argoed Baptist Church, said the building had a 'fluctuating' population of people, mostly in their 30s or 40s.

A villager, who did not want to be named, said: 'Ever since [the hostel] opened, we've had constant problems.

'I've got a young family and I'm frightened to even walk near the place.'

Another resident said: 'The police are here nearly every other day.'

And Reverend Charlotte Moss of Argoed Baptist Church told MailOnline: 'We're doing what we can. All we can do at the moment is we've opened the building and made it available for people.'

She said she had been 'back and forth' to the church today - and added that it was there to support local residents, describing the area as 'a typical Valleys village'.

Welsh Ambulance Services were called by police at 1.30am and said they 'responded with a paramedic in a rapid response vehicle and a crew in an emergency ambulance'.

A spokesman added that a man and woman were both pronounced dead at the scene.

Early morning attack: Police were called to the Sirhowy Arms Hotel (above) in Argoed, Caerphilly, south Wales

The hotel - located in the Sirhowy Valley in a village of about 2,500 people - has nine guest rooms, including three singles, four twins, one double and one family.

Local media reported five years ago how the building was being used as a bed and breakfast helping the homeless, having closed as a pub and hotel in 2008.

Local councillor and Caerphilly Council deputy mayor Leon Gardiner, 81, said Argoed had been 'hit for six' by the deaths.

He said: 'When I went for my paper this morning, I could see the road was closed off and there were police everywhere. When I heard that two people had died, I couldn't believe it.

'Everyone is totally stunned by what has happened. It's a shock because Argoed is a lovely place to live and I've never known anything like this to happen here before.'

When I heard that two people had died, I couldn't believe it. Everyone is totally stunned by what has happened Leon Gardiner, local councillor

Mr Gardiner added that he also felt sorry for the owners the Sirhowy Arms Hotel.

'They are a lovely couple and well liked' he said. 'They've done a smashing job - especially with the renovations in the past couple of years.

'It's a B&B but has been used as a hostel for homeless people. It's run magnificently.'

That sentiment was also echoed by a neighbour of the hotel, who said: 'We've never had any problems. The people who live there are not allowed to drink or smoke in the hotel so they go down to the woods to do it. Sometimes there are police vans outside if there has been a fight or something, but despite that it's still a quiet street.'

A spokesman for Caerphilly County Borough Council said: 'The authority is fully co-operating with Gwent Police as part of their ongoing investigations.