On 1 October, Spanish trekker and football fanatic Santiago Sánchez posted a series of photos to Instagram.
“Last village in northern Iraq, a mountain separates me from reaching Iran, the next country before reaching Qatar,” he wrote, alongside photos of his trip through Iraq.
Mr Sánchez was nearing the final leg of his mammoth trek from Madrid to Doha for the Fifa 2022 World Cup. He has not posted since.
All contact was lost on 2 October.
After weeks of concern among friends and family over his whereabouts, it emerged that the 41-year-old was in custody in the Iranian capital, Tehran.