Qatar is facing fresh questions over its claim to be cracking down on support for terrorism after the Gulf state’s prime minister was guest of honour at an event hosted by one of the world’s most prolific terrorism financiers.

Sheikh Abdullah bin Nasser bin Khalifa al-Thani, the Qatari prime minister, was photographed alongside Abd al-Rahman bin Umayr al-Nuaymi, weeks after his government designated Mr Nuaymi a financier of terrorism, following similar declarations made by Britain, the US and the United Nations Security Council.

The pictures were taken at the wedding of Mr Nuaymi’s son, Abdullah, on April 11, two days after Qatar’s Emir assured Donald Trump: “We do not tolerate… people who support and fund terrorism.” British ministers had also welcomed the “Emir of Qatar’s commitment to tackle terrorism in all its manifestations, including terrorist financing”.

Khaled Mashaal, the former leader of Hamas, also designated a terror group by the US, was also photographed at the event.

It throws into doubt Qatar’s claims to be taking a zero-tolerance approach to terror financiers as it attempts to end a blockade by neighbouring states that accuse the country of supporting terrorist groups across the region and of being too close to Iran.