Nelson Delgado is believed to have moved to Magaluf straight after his release from Aylesbury Yong Offenders institution, Buckinghamshire, where he had an affair with Kelly-Anne McDade while serving a sentence for aggravated burglary and assault.
Prison Officer Kelly was later forced to resign and jailed for 18 months after giving birth to their baby.
Now, Delgado, 25, is back behind bars after being held on suspicion of attempted murder and assault over the vicious assault in the party resort in the early hours of Friday morning.
Alleged stabbing victim, nightclub manager Daniel Billingham, 34, is still in hospital receiving treatment for two stab wounds to his back. His friend Sam Byrne, 30, was released from hospital after being treated for stab wounds to his stomach and arms.
Another British man and a Spaniard, who both live locally, are also out of hospital after receiving treatment for knife wounds.
Closer interviewed Kelly-Anne McDade after she gave birth to Delgado’s baby in February 2009.
She told Closer: “ I loved Nelson and know he’ll be a good dad. He was worth losing my job over.”
Kelly, from Aylesbury, Buckinghamshire, was in charge of cleaning and serving food at the prison when she met Delgado, now 25.
He was locked up in November 2006 for aggravated burglary, actual bodily harm and grievous bodily harm after terrorising a couple in a drink and drug-fuelled attack.
Armed with a four-inch blade, Delgado and a friend broke into their home and beat the man. Delgado hit the woman over the head with a bottle before chillingly asking her if she’d ever been raped.
He was 19 and had served more than a year behind bars when he started spending time with Kelly in February 2008, during meal times and down time.
“He told me about his life and how he ended up inside,” said Kelly, who’d worked there since August 2005. “I was horrified by his crime but believed that he was completely reformed – I saw a completely different side to him – a man who adored his family and had a big heart. We just clicked. He made me laugh and I loved his smile.”
Incredibly, even though affairs between staff and inmates are banned, Kelly didn’t cut contact when she realised she had feelings for him.
“I knew I was crossing the line, but I couldn’t stop myself,” claimed Kelly, who’d been single for two years.
Then in April, Kelly was carrying out a routine check of Delgado’s cell when he kissed her.
“I kissed him back but it only lasted for a few seconds.”
“I didn’t care it was wrong. I was deeply in love. I cared about him more than my job. I thought about quitting but then I wouldn’t be able to see him every day.”
As their affair progressed, Kelly and Delgado took every opportunity to be together – chatting during the prisoner’s free time, in the lunch hall and during the cleaning rounds often spending up to 21/2 hours a day together.
And just two weeks later, they had sex in a storeroom.
“We had to be quick, so there was no foreplay but the fear of getting caught made it exciting and passionate,” said Kelly.
From then on the couple romped as often as possible. They were never caught, but in May 2008, Kelly fell pregnant.
I couldn’t believe it,” said Kelly. “ We hadn’t used condoms but I’d just come off the contraceptive injection I thought I was still covered.”
The next day Kelly broke the news to Delgado.
“We got interrupted before we could talk but I knew he was pleased because he broke into a huge grin. There was no question of an abortion.”
And when prison bosses learned of the pregnancy later that day, after Kelly let slip to a colleague, she was moved to work in the prison reception.
“I was gutted but they have a duty to make sure I’m safe and didn’t want me to be in contact with prisoners,”said Kelly. “I needed to talk to Nelson but couldn’t get near him.”
After two weeks Kelly begged to be put on evening patrol, where the prisoners are locked in their cells and a guard keeps watch until the night shift starts.
During her first shift back, Kelly opened Delgado’s cell to speak to him – a serious security breach.
“All I wanted was a hug and for him to tell me everything was going to be OK,” said Kelly. “I knew it was against the rules and I could lose my job but I didn’t care.”
But she was spotted unlocking the door on CCTV and the next day Kelly was suspended.
“Everyone suspected our affair because of the way we flirted but no one had been able to prove it,” admitted Kelly.
“A security breach was the perfect way to get rid of me. It was gross misconduct and I really had no option but to resign rather than face the sack. But people don’t realise the half of what goes on behind bars.”
“I’m not the first and I won’t be the last officer to have a relationship with a prisoner.”
Delgado was transferred to another prison a two-hour drive away.
It was only then that Kelly could speak to him again.
“By the time I got through to him on the phone I was in a state,” she said. “But he promised to behave to get released early and be a good dad.”
She visited him every fortnight until giving birth to baby Nelson Jnr in February 2009.
“I was gutted Nelson couldn’t be at the birth,” she admitted. “But my sister was there.”
A month later she took Nelson to see his dad for the first time.
“He hasn’t been able to hold his son yet because he’s only allowed to see visitors from behind glass,” admitted Kelly.
“Even so he’s very doting. “I know he’ll be a good dad. He’d never do anything to hurt me or our son.”
After leaving her job the following September, Kelly moved in with her mum, and although her family were shocked by the affair, they stood by her.
At the time, Kelly hoped to build a life with Delgado, although after his release from prison the couple’s relationship failed.