Brian McFadden has said his ex-wife Kerry Katona is an embarrassment to himself and their children.
The former Westlife member has called Katona "disgusting" after she accused his family of being responsible for the premature birth of her fourth child Max.
The couple's two children Molly and Lily-Sue had returned late from a stay with McFadden and his fiancee Delta Goodrem in Australia over Easter, after McFadden's mother Mairead decided to let the two girls stay with her and their grandfather Brendan in Dublin.
Rather than returning to Warrington, Cheshire on March 30th, the children instead returned to Katona and her husband Mark Croft on April 3rd, a week before the former Atomic Kitten gave birth to Max.
But after Katona said the girls' late return from their Easter break had triggered the anxiety which caused her to go into labour prematurely, McFadden has hit back at his ex-wife's comments.
"Kerry is a disgusting human being. She manipulates people and plays the sympathy card for every stupid mistake she makes," he told the News of the World newspaper.
"Me and my family have been put through hell by her stupid games.
"She uses my two girls as a weapon in her childish games. She is an embarrassment to me, my family and my children," he added.
McFadden, 28, and 27-year-old Katona were married in January 2002 but separated in September 2004. Their divorce was finalised in December 2006.