GEOFF BENNETT: Welcome to the "News Hour."

There were shockwaves across the# U.K.

today after the arrest of the## former Prince Andrew on suspicion# of misconduct in public office,## his arrest reportedly linked to the# latest release of the Epstein files.

AMNA NAWAZ: Andrew Mountbatten-Windsor, as# he's now known, was taken into custody at## the royal Sandringham estate and later# released.

An arrest of this magnitude## involving the sibling of a reigning monarch# has no precedent in modern British history.

We begin our coverage tonight with this report## from correspondent Chris Ship# and our partners at ITV News.

CHRIS SHIP: At breakfast time, a number of# unmarked police cars arrived unannounced,## their task, to arrest the# younger brother of King Charles.

Today, is Andrew Mountbatten-Windsor's# birthday.

He has spent most of it in## police custody answering questions.

By# 10:00 a.m.

this morning, Thames Valley## Police confirmed they had made an arrest on# suspicion of misconduct in public office.

At Royal Lodge in Windsor, where Andrew had been# living until the start of this month, black vans## were filmed entering the grounds earlier today.# At midday, the first response from Buckingham## Palace and the statement was signed Charles# R., meaning this was from the king himself.

He spoke of how he had learned with the# deepest concern of his brother's arrest## and insisted a full, fair and proper# process should follow in terms of the## investigation.

The king repeated he was ready# to fully cooperate with the police and then,## in the starkest way possible, he wrote: "Let me# state clearly, the law must take its course."

And, this afternoon, just as he pledged he would,# the king continued with his public engagement.

QUESTION: Do you have any reactions# to the arrest of your brother, sir?

QUESTION: Your Majesty, how are you# feeling after your brother's arrest?

CHRIS SHIP: Today's diary did not change,# but the questions on his arrival did.

QUESTION: Have you spoken to# your brother, Your Majesty?

CHRIS SHIP: He had all his# senior staff with him.

He knows,## just as they know, what a# precarious moment this is.

As for another of Queen Elizabeth's children,## Princess Anne, her diary today included a# visit to a prison.

She didn't cancel it.

QUESTION: What's your reaction to# your brother's arrest, Your Highness?

CHRIS SHIP: So why did police launch a criminal# investigation?

It followed an assessment of the## most recently released Epstein files made# public by the U.S.

Department of Justice.

Those files appeared to show e-mails# from the then-Prince Andrew to Jeffrey## Epstein at around the time they were# photographed in Central Park in New York.## Police are investigating if confidential# papers about business opportunities were## shared by the then-prince and if that# amounts to misconduct in public office.

At the time, Andrew was a trade ambassador# on behalf of the British government, a role## which would have given him access to sensitive# and confidential documents.

The arrest is not## connected to claims made by Andrew's accuser, the# late Virginia Giuffre, nor was it the result of## new claims a woman was trafficked to Andrew for# sex in 2010.

Police are still assessing those.

The prime minister, speaking before# today's arrest, said once again## whatever information Andrew has should be shared.

KEIR STARMER, British Prime Minister: Whether it's# Andrew or anybody else, anybody who's got relevant## information should come forward to whatever# the relevant body is.

In this particular case,## we're talking about Epstein, but# there are plenty of other cases.

It is anybody who's got information# relating to any aspect of violence## against women and girls has, in my view,# a duty to come forward whoever they are.

CHRIS SHIP: And after the arrest,## this response from the foreign secretary# speaking to ITV News in New York.

YVETTE COOPER, British Foreign Minister:# There is a police investigation under way.## And it is immensely important# that investigation can take## its course.

As the prime minister# has said, no one is above the law.

CHRIS SHIP: The king was not told# of his brother's arrest before it## happened.

This is a seismic moment for monarchy.

King Charles said today his family will# "continue in our duty and service to you all."

AMNA NAWAZ: Our thanks to Chris# Ship of ITV News for that report.