A New York judge has temporarily blocked President Donald Trump's niece from publishing a memoir about the US first family, EDNews.net reports citing [BBC News.

Mary Trump's upcoming book, Too Much and Never Enough, How My Family Created the World's Most Dangerous Man, is due to be published on 28 July.

But on Tuesday a judge granted a restraining order to Ms Trump's uncle, the president's brother, Robert.

Lawyers for Ms Trump say they will immediately appeal against the ruling.

“The trial court's temporary restraining order is only temporary but it still is a prior restraint on core political speech that flatly violates the First Amendment. This book, which addresses matters of great public concern and importance about a sitting president in an election year, should not be supressed even for one day,” said her lawyer, Ted Boutrous.

The book is being published by Simon & Schuster and has already reached fourth place on Amazon's best-seller list ahead of its release.

A hearing is scheduled in New York's Dutchess County for 10 July.

Mary Trump, 55, is the daughter of President Trump's elder brother, Fred Trump Jr, who died in 1981.

The book claims to reveal "a nightmare of traumas, destructive relationships, and a tragic combination of neglect and abuse".

Robert's Trump lawyer, Charles Harder, cheered the ruling, saying that "the actions of Mary Trump and Simon & Schuster are truly reprehensible".

Earlier this month, President Trump said that his niece was violating her non-disclosure agreement (NDA) by writing a book.

The book memoir will reportedly reveal how Mary Trump supplied the New York Times with confidential documents to print a sprawling investigation into Donald Trump's personal finances.

The Pulitzer Prize-winning exclusive alleged the president had been involved in "fraudulent" tax schemes and received more than $400m (£316m) in today's money from his father's real estate empire. A lawyer for the president and the White House denied the allegations of fraud and tax evasion made against Donald Trump.

This is the second book by publisher Simon & Schuster that Trump and his associates are seeking to block. Earlier this month, the US justice department was denied an injunction to block a memoir by John Bolton, President Trump's former National Security Adviser.