Last week, the desperate plight of Princess Latifah caused worldwide shock and concern in secret video messages revealed by the BBC.

She says she was abducted after she tried to run away and is being held captive by her father, the ruler off Dubai Sheikh Mohammed Rashid al Maktoum.

But now the BBC can reveal another police from Latifah, this time raising questions for Britain.

20 years ago, her in the UK her sister Samsa also tried to escape from their father but was recaptured and taken back to Dubai.

Investigation by Cambridgeshire police was closed due to insufficient evidence.

BBC has now obtained a letter written by Princess Latifah to the police with a police to reopen her sister's case.

Our special correspondent Nahuala McCarthy, reports Sheikh Mohammed Rashid al Maktoum, the billionaire ruler of Dubai, on one of the most powerful men in the Middle East.

Last week, the BBC released secret recordings of his daughter, Princess Latifa, in them.

She claims he is responsible for her abduction and imprisonment.

The messages sparked international concerns, but Latif was not the only daughter of Sheikh Mohammed to try to escape.

20 years ago, her sister Shamsher ran away from the family estate in Sorry.

In 2000, my sister Samsa.

Well, she was on holiday in England.

She was 18 years old going on 19.

She ran away.

So yeah, After two months, they found her.

The police launched an investigation, but it hit a dead end.

Now the BBC has obtained an exclusive letter written by Princess Latifah from her captivity.

In it a plea to reopen her sister's case.

The letter delivered by her friends yesterday to Cambridgeshire police says SAMHSA has strong links with England.

Her fondest memories are of her time Here.

You're helping attention could free her.

We've pieced together, Sam says Extraordinary story.

She was a passionate horse rider on loved spending summers at her father's estate in the Surrey countryside.

Uh, some Sahwas cheeky like to push all the boundaries.

And she wasn't, uh, what you would call a princess.

You know, um, she was full of life and adventure.

She dreamt of going to university, but says that her father wouldn't allow it.

So in the summer of the year 2000, she drove a black Range Rover to the edge of the estate and she ran away after Shams escaped her father's estate in Long Cross, she lived as a free woman for around two months.

She then checked into this hotel in Cambridge.

Suddenly, her father's operatives arrived, and she was captured by 5 a.m. The next morning, she was on a helicopter to northern France, where she was transferred to a private jet that took her to Dubai.

Six months later, from her captivity and Dubai, Shamsher managed to get word of what happened to her toe.

A lawyer in the UK who contacted the police, D.

C.

David Beck, received the news.

It's not every day that analogy ation involving a head of state lands on a police officer's desk.

In 2000 and one D.

C.

I.

David Beck needed to go to divide to speak to Samsa.

He applied through the Crown Prosecution Service on That's effectively where my investigation came to an end because short, while later I was informed that my request had Bean declined.

He was later told by a senior colleague that the investigation has some significant sensitivities.

The London office of the princess's father, Sheikh Mohammed and Maktoum had contacted the F.

C O about this the Foreign Office told us that the investigation was conducted by Cambridgeshire police and that they had no role in the investigation or its outcome.

But they declined to answer any of our questions about the communication between them and Sheikh Mohammed Al Maktoum office.

Shamsul was kept locked up for the next eight years.

She was then released from confinement, but her life remained heavily controlled.

We spoke to someone who had regular contact with her after she was released.

She was tranquilized all the time.

Everything she did was controlled.

There was no spark in champs or anymore.

There was no fight in her, and I understand that people can't get their head around it.

They just see some rich girl.

It's not like that at all.

It's horrific.

The U.

A E government maintain that Sham sent Latifa our cherished and adored by their family.

They're yet to prove that they're still alive and well.

Well, I spoke to knew well a short time ago, and I asked her what reaction they had.

Bean to Latifah's message.

So they've said that they are reviewing Shams case and that they'll take this letter from Princess Latifah into account I think what caused so much reaction to Princess Latifah's case is the messages that we broadcast last week.

It was a way for her to tell the world what's actually happening to her.

Where is Princess Samsa?

Her older sister hasn't had that opportunity.

I mean, last week after we broadcast her message is we had from the U.

N.

Who've said they've asked the U.

A E for proof of life or Princess Latifah.

We also heard from the Prime minister, Boris Johnson, and the foreign minister, Dominic Raab, who have said that they're gonna follow closely what the U.

N is doing and that the videos are deeply distressing, and also from Secretary of State US Secretary of State Antony Blinken, who said he'll be following closely as well.

Do we know how Princess Latifa is?

So Princess Latifah, the last we ever heard from her waas in those messages the phone that she was using to record those sacred messages has been silent for a couple of months now, and that's what encouraged her friends to decide that now is the time to broadcast those messages.

But what we the only thing we know is that the U A e.

From their statement last week, has said that she will return to public life when she can.

Princess Chansa.

Princess Sham So we haven't had anything from actually, I mean, the last we know off her is that statement that we heard from someone who was working closely with her from a couple of years ago on also Princess Latifah, who says, um, that her sister is like a zombie now that she has been given tranquilizers given drugs and it's not herself anymore, but that that's all we know.