内容摘要：King Charles III and Queen Camilla have arrived in Canada for a visit meant to underscore Canada's sovereignty in the face of tensions with the US.

King Charles III and Queen Camilla have arrived in Canada for a visit meant to underscore Canada's sovereignty in the face of tensions with the US.

Further clips, posted to TikTok by Ali and Shahzad place Gujjar in Mauritania as early as August 2024. The trio are seen on the rooftops of Nouakchott's sand-coloured buildings and in restaurants around the city - a luxury other migrants couldn't afford.Videos from their accounts reveal the men were close, hailing from the same village. Their uncle, Ahsan Shahzad Chaudhry, confirmed to BBC Verify that his nephew Sufian Ali was friends with Gujjar.

One survivor named Uzair Bhat said Gujjar falsely promised him safe and legal routes to Europe. He sent BBC Verify proof of funds transferred to a bank account under Gujjar's real name, Khawar Hassan.But when Uzair arrived in Mauritania, the smuggler backtracked."He said going by air will not work from here. I'll send you by a big ship," Uzair recalled. "Please cooperate, your visa [to Europe] won't come through."

Eventually Uzair relented.As well as Ali, Shahzad and Uzair, BBC Verify identified two other migrants who bought journeys from Gujjar.

Once they arrived in Nouakchott they say they were placed in "safe houses" - a term used for buildings tucked away in obscure alleys where migrants are held illegally by smugglers.

One person who used a different agent said he also stayed in safe houses run by Gujjar."These aren't the records that you want to break, but we've seen more rain and more flooding in the mid and the north coast than we've ever seen before," he said.

Punjabi rap music plays over a video showing three men at a beachside restaurant in Mauritania's capital Nouakchott. One after the other, they smile at the camera before casually turning to talk and laugh together.The three are clearly friends. Two of them, Sufian Ali and Atif Shahzad, are cousins from rural Pakistan.

But it's the third man in particular who dominates the conversation. He's Fadi Gujjar, a people smuggler.The video - posted to Gujjar's TikTok account - is one of more than 450 clips analysed by BBC Verify that reveal clues about his activities and his close relationship to the other men.