The ruler of Sharjah stands over the body of his son as funeral is held in UAE for the fashion chain-owner, 39, following his 'drug orgy death at London penthouse'

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The son of a powerful Emir has been laid to rest in the UAE after he was found dead in his London penthouse apartment at the age of 39 on Monday.

Tens of thousands of mourners attended the funeral of Sheikh Khalid bin Sultan Al Qasimi, the owner of fashion label Qasimi Homme, on Wednesday in the city of Sharjah, which his father rules over.

Sheikh Dr Sultan bin Muhammad Al Qasimi stood over his son's body with his eyes closed as he joined in prayers at the King Faisal Mosque at 9am.

The funeral was held amid reports that Sheikh Khalid had passed away during a drug-fuelled party at which some of the guests were having sex.

The Westminster coroners officers said that toxicology tests had been carried out during a post mortem, that took place before his body was repatriated.

However, the results 'may not be known for another two months' and so far no date has been set for an inquest.

Tens of thousands of mourners turned out for the funeral of Sheikh Khalid bin Sultan Al Qasimi, the son of Sheikh Dr Sultan bin Muhammad Al Qasimi, which was held in the UAE on Wednesday morning

Sheikh Dr Sultan bin Muhammad Al Qasimi (second right) stood over the body of his son with his eyes closed during prayers, where he was flanked by Sheikh Saud bin Saqr Al Qasimi (right), Sheikh Humaid bin Rashid al Nuaimi (second left) and Sheikh Saud bin Rashid Al Mu'alla (far left)

The Sultan watched with glazed eyes as funeral prayers were said for his son at the King Faisal Mosque at 9am, before a burial ceremony at the nearby Al Jubail Cemetery

Dignitaries from across the United Arab Emirates bow their heads in prayer at the funeral for Sheikh Khalid on Wednesday

Sharia law commands that bodies are buried as soon as possible, ideally within 24 hours after a death. The body is washed and shrouded before the ceremony, during which prayers are said

The body of Sheik Khalid is carried into the King Faisal Mosque in Sharjah, the city which his father rules over in the UAE

The body was carried to the mosque in a white cloth covering before that was removed to reveal the black funeral shroud. The body was then taken to the Al Jubail Cemetery for burial

Sheikh Dr. Sultan bin Mohamed Al Qasimi (third left), was joined by his fellow Emirs as he watched the body of son Sheikh Khalid buried on Wednesday

Sheikh Khalid was buried in an unmarked grave which was covered with a mound of earth and a few decorative stones

The streets around King Faisal mosque was blocked off by police on Wednesday as the ceremony took place, with regular traffic directed around.

Mourners filed into the building in silence before dignitaries including the Sultan entered through a separate door.

During the service, the Sultan was flanked by his fellow Emirs, including Sheikh Saud bin Saqr, Ruler of Ras Al Khaimah, Sheikh Humaid bin Rashid, Ruler of Ajman and Sheikh Ammar bin Humaid, Crown Prince of Ajman. 

Also in attendance was Sheikh Saif bin Zayed, Prime Minister and Minister of Interior, and Sheikh Nahyan bin Mubarak, Minister of Tolerance, The National reported. 

Mourners sat in silence until shortly before 9am when they stood as prayers were read out, Gulf News reported. 

The bier carrying Sheikh Khalid's body was then driven to the nearby Al Jubail Cemetery where it was buried in an unmarked grave, decorated with only a few stones.

Sheikh Khalid bin Sultan Al Qasimi (pictured) was found dead at his Knightsbridge apartment in London on Monday

As the Emirs left the graveyard, other mourners filed in to pay their respects. 

Three days of national mourning began across the UAE on Tuesday, with flags flying at half mast.  Al Badee Palace in Sharjah has also been opened to receive mourners during this period. 

According to Sharia law, the dead should be buried as soon as possible, usually within 24 hours of death. The body is washed and shrouded before burial, which is followed by a salah, or prayer.

Sheik Khalid's funeral took place amid unconfirmed reports of a 'drug-fuelled orgy' at his apartment around the time he died.  

Sources said a quantity of Class A drugs had been found at the penthouse flat in Knightsbridge where his body was discovered but the police have yet to confirm or deny this. 

Officers were said to have found the drugs after being called in by medics, according to The Sun.  

A source told the same publication: 'There had apparently been a party where some guests were taking drugs and having sex. 

'It is suspected that Sheikh Khalid may have died suddenly as a result of taking drugs. As well as the police inquiry, an urgent internal probe has been ordered and staff have been ordered to keep quiet.' 

The source added that Qasimi enjoyed the freedoms that London offers but that his story 'has ended tragically'. 

The high-end apartment block where his body was found boasts a dozen homes that sell for up to £90 million. 

The Sheikh's friend and former business partner Elliott Frieze said last night: 'He was incredibly hard working and talented. He was a wonderful person.' 

No arrests have been made in the 'unexplained' tragedy, as detectives are describing it. Flags in Sharjah have been ordered to fly at half mast as three days of national mourning begin. 

Tributes have flooded in on social media expressing condolences to the Emir, who lost another son aged 24 in 1999.  

The fashion label owner (pictured left and right) was raised in Britain after moving there aged nine, and set up his menswear brand in London in 2008

Pictured: The Knightsbridge Apartments where the prince was found dead on Monday after a party where guests allegedly took Class As

The Saturdays singer Vanessa White is pictured with Khalid bin Sultan Al Qasimi at the Qasimi menswear catwalk at London Fashion Week

The ruler (pictured) is mourning the death of his second son as flags in the UAE are ordered to fly at half-mast 

His death has been described as 'unexpected' by members of his team. 

The prince was born in Sharjah but moved to the UK aged nine where he was educated at the prestigious Tonbridge School in Kent. 

He studied French and Spanish at Imperial College London before moving on to an architectural degree and art school Central Saint Martins, where he studied fashion and launched his menswear label Qasimi Homme in 2008.

Its flagship UK store opened in Soho that year, with his clothes now stocked across the globe and paraded at fashion weeks in London, Paris and the Middle East. 

The UAE's Ministry of Presidential Affairs said in a statement: 'President His Highness Sheikh Khalifa Bin Zayed Al Nahyan mourns with grief and sorrow, the death of Sheikh Khalid Bin Sultan Bin Mohammed Al Qasimi, the son of the Ruler of Sharjah, praying to Allah the Almighty to rest his soul in peace, and grant his family patience and solace.' 

Pictured: The social media announcement that revealed the prince had died in London on Monday

A second Instagram post was uploaded on his brand's official channel on Tuesday announcing the death

A tribute posted on his brand's Instagram account on Tuesday reads: 'It is with great sadness that we report that Khalid Al Qasimi has unexpectedly passed away on 1st July 2019.

'Khalid was praised for his tenacious yet sensitive exploration of social-political issues, particularly those pertaining to the Middle East and its sometimes strained relationship with the West, a subject very close to his heart and his upbringing.

'His goal was to create a world full of beautifully crafted products infused with cultural, social and political undertones to inform and inspire.

Model Alice Delal and Khalid Al Qasimi attend a party hosted by Qasimi on November 19, 2009 in London

Jade Parfitt , Khalid bin Sultan Al Qasimi, Elliott J Frieze and Erin O'Connor on the catwalk at the Qasimi Spring Summer 2009 Fashion Show at London Fashion Week

The menswear fashion brand founder (pictured on the runway for his London Fashion Week show) died in London, it was revealed

'The design world has lost a great philosopher and artist, and we ask that the privacy of the family, team and brand are respected at this difficult time.'  

Sultan bin Muhammad Al Qasimi came into power in 1972. This is the second of his children to die.

His eldest son, Sheikh Mohammed Bin Sultan Al Qasimi, died of a heroin overdose aged 24 in 1999, the Independent reported at the time.

He was reportedly found on his bathroom floor at home in East Grinstead surrounded by syringes.

Friends posted pictures of themselves with the prince to pay tribute to him. Pictured far left: Khalid Al Qasimi with Mariano Vivanco and centre right with friend Simone 

Friend and Peruvian photographer Mariano Vivanco posted this picture of Khalid Al Qasimi with the tribute: 'Will always be my Angel RIP' 

Sharjah is in the UAE, which is now mourning the death of Qasimi fashion label owner Sheikh Khalid bin Sultan Al Qasimi who was the son of its ruler Sheikh Dr Sultan bin Muhammad Al Qasimi

A sunset view of the 'The Eye of Sharjah' - a giant wheel located near the corniche side of the City of Sharjah in the UAE