Katie Price has stepped up security at her stables after sinister threats were made to butcher one of her beloved horses.
The messages were left on a website forum by a twisted cage-fighting fan who believes her relationship with Alex Reid has brought shame on their sport.
Police are taking the threats seriously and interviewed Reid at his parents’ Hampshire home on Friday night.
A spokeswoman said they were also liaising with Surrey police where Katie, 31, lives.
There has been a furious backlash from cage-fighting supporters about Alex’s relationship with the model and revelations he likes to dress up as woman.
Detectives were called in when a fanatic on the cagewarrior.com website forum warned that one of Jordan’s horses would be killed unless he ended his association with the sport.
The author wrote: “Alex, stop wearing mixed martial art T-shirts or I’ll kill one of Jordan’s horses. Alex give it up – everyone f***ing hates you.”
The message was seen by Reid’s agent Colin Betteridge. He alerted the police, who are now trying to trace the person who made the threat.
He is known to live in Warrington, Cheshire.
Yesterday a source close to Reid said: “There have been several things on that forum recently, mostly accusing Alex of bringing the sport into disrepute, but this one was a bit different.
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“There was a direct threat to kill one of Jordan’s horses and you have to take that kind of thing seriously. Yes we are worried. There are lunatics out there.
“The police went to see Alex at his parent’s home in Aldershot on Friday. He had been training in the morning and then visiting a friend who is in hospital after having a heart attack.
“That’s why he was at his house last night. Normally he’d be at Katie’s. The police talked to him for an hour and he gave a statement.”
The source added: “It’s not other cage-fighters behind this, it’s the people who follow them.
“They get wound up and Alex has been getting an unparalleled amount of grief.”
Jordan is a passionate horsewoman and keeps a stable of six near her Surrey home, including Glamour Girl, s Major Max, Player and Cross Dresser – a horse named after Alex.
Two weeks ago the Sunday Mirror revealed how Jordan had paid for an artist to draw up a coat of arms for herself and lover Alex.
She plans to have it painted on the back of her horse box to show off her love for Alex at the polo and dressage events she regularly competes in across the country.
Meanwhile Jordan was left embarrassed yesterday when a book-signing in Dublin was cut short when just 60 fans turned up to see her.
Jordan smiled for photographers, but looked glum as she signed copies of her book, Standing Out, at one of the country’s busiest shopping centres. After just 20 minutes red-faced Jordan was led out of a back door and driven to the airport.