After two weeks of relative calm, Katie Price and Peter Andre’s split looks like it might be starting to get a little bitter: she’s accused him of selling pictures of their children.

Last week, Katie was rumoured to have tried to sell exclusive photos of her sunbathing with son Junior and daughter Princess in the Maldives for a non-negotiable fee of £150,000 but when Peter was photographed holding the children in Hove at the weekend, Katie (who is also known as Jordan) Twittered: “Mmmm, I smell set-up pictures.”

A source told the Mirror that Peter was outraged when he saw the comment: “After spending an amazing weekend with his kids, he was hoping his relationship with Katie could get back on more cordial terms.

“But after discovering she had Twittered, suggesting he had tipped off the media as to his whereabouts with the kids, he went ballistic.

“On the first day he refused even to go outside with them because he did not wish to be seen. On the second day, he only went out for two hours because Junior wanted to go to the beach.

“Pete has not sold his story, and does not wish to profit from divorce. He believes her comments are defamatory and is desperate for her to apologise.”

The source added though that the Tweet may have been an ill-thought out reaction rather than anything malicious: “For her part, Kate realises how her comments may have come across and feels bad. She didn’t want to take a dig at Pete.

“She knows he’s a great dad and, privately, doesn’t have a bad word to say about him.”

Peter is expected to challenge for joint custody of the children, who turn four and two respectively next month, and is also expected to request regular access to Katie’s seven year old son from a previous relationship, Harvey.