Dan Osborne recently featured on a leaked tape in which he told ex Megan Tomlin, the mother of his 14-month-old son Teddy, that he would stick a knife in her if she slept with another man.
The Only Way Is Essex star went on to call the young mum a "dirty little c***" and told her to "go f*** yourself," after seemingly denying his relationship with EastEnders actress Jacqueline Jossa, whom was pregnant with daughter Ella Selina at the time the tape was recorded.
“Pure 100% scum of the earth"
And now Jim Osborne - who has starred in TOWIE alongside his son - has apparently also lashed out at Megan Tomlin in a nasty online rant.
According to The Sun, he posted to his son on Facebook: “You are worth a million of Megan and Pam [Megan's mum], the old dog is loading the bullets for the little munter to fire.
“Pure 100% scum of the earth. Tramp, great role model.
“Nasty, horrible little people who think they are clever trying to use violence on a good man, tut tut, you should be ashamed of yourself.”
His shocking response to the leaked tape scandal comes shortly after Dan released a statement apologising to his family and fans for his abusive behaviour.
He said: "It has taken me a while to find the right words but I would like to say that I am truly sorry to anyone who was offended by what they heard.
"I am unable to talk about the difficulties with my current family situation but I am taking steps to resolve it to achieve the best outcome for my son. I am ashamed and embarrassed that I allowed myself to reach such a dark place that I behaved in a way that even I didn't recognise.
"While I acknowledge that there is absolutely no excuse for my deeply regrettable behaviour, I plead for some understanding that I had no intention of violence."
Meanwhile Megan, 22, has admitted she has been through a very difficult time following Dan's arrest in November, when he was investigated over historic domestic abuse claims.
She told The Mirror: "No, I'm not trying to destroy their relationship. In the past 18 months, a lot of what's been written hasn't been based on fact."
Adding that she was not the one who leaked the tape, she added: "It was out of my hands but the police have been great. My focus is Ted, he always has been and always will be, like any mother, I'm trying to protect him."
Essex Police have since confirmed that they will not be taking any further action.