Prime Minister Najib Abdul Razak's son-in-law Daniyar Kesikbayev has threatened to sue DAP's Raub MP Mohd Ariff Sabri over a blog posting which mentions Kesikbayev.

The article 'Faulty rewards system and changeable governments' was published on the MP's blog 'Sakmongkol AK47'.

It was reproduced by Malaysia Chronicles under the title: "Son-in-law Daniyar to be Najib's new 'Jho Low': Disquiet over contract to renovate gov'ts office in New York."

In a press statement, released through law firm Messrs Noorhajran Mohd Noor, Daniyar demanded the article be taken down and an apology issued within 48 hours.

"All the above statements are untrue. It is malicious, baseless and the lies are intended to harm the reputation of my client Daniyar Kesikbayev and the good name of his family.

"The words written by Mohd Ariff Sabri is intended to make representations, publishes imputation intending to harm or knowing or having reasons to believe that such imputations will harm the reputation of Daniyar Kesikbayev.

"My client reserves all further civil and criminal rights to institute legal proceedings," said the law firm.

In the press release, Daniyar's lawyers also took issue with Ariff's criticism of Umno where he claimed that the corrupt can rise to power and singled out Najib.

Daniyar is married to Nooryana Najwa, Najib's daughter.

Malaysiakini has contacted Ariff and is awaiting response.