Jemima, who divorced Imran in 2004, tweeted: 'On Reham Khan's book I've been assured that it's too libellous to be published in the United Kingdom but if it is published here, I will be suing for defamation & breach of privacy on behalf of my (then) 16 yr old son & in relation to the moronic, re-hashed Zionist conspiracy theories.
On 19 February, Khan's PTI spokesperson Fawad Chaudhary said that the party chief married Bushra in a simple ceremony.
Earlier, in an interview to an CNN18, Reham alleged that her former husband sought sexual favours for political positions.
She said: 'I've discussed sexual harassment, sexual coercion and how it is used.
According to News18, Reham has also said that the tell-all book will reveal instances of sexual assault or sexual favours, including some which are directly linked to Khan.
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On Monday, Reham had said that Imran is not "sadiq and amin" (honest and righteous) in line with Constitutional provisions as he hid this third marriage for two months. This constituted a violation of Article 62 and 63 of Pakistan's Constitution, she was quoted as saying by the Pakistani media.
The former Pakistan cricketer Wasim Akram, along with three others, has served a legal notice to Imran Khan's ex-wife Reham Khan after she made some sensational disclosures about their personal lives in her autobiography.
Reham's autobiography triggered a controversy last week, when actor Hamza Ali Abbasi claimed he had read the manuscript and accused her of working at the behest of the PML-N to malign several PTI leaders and activists ahead of the general election to be held on July 25. She has written a book titled 'Reham Khan'.
'The main thrust of the book is how we as individuals, journalists, informed people of the media, people with an interest in politics... don't really know what we're voting for, ' she said. PTI supporters fear such allegations or claims of infidelity could hurt Imran's appeal among Pakistan's conservative urban middle-class.