*UPDATE Wednesday, June 15, 12pm: Kane has now been found. His friends say he was attacked and robbed in Nice, but that otherwise he is well and safe. They have thanked everyone who shared the campaign for their support.
The friends and family of soccer fan Kane Leslie are getting behind a social media campaign to locate him in Nice.
The young Northern Irish man has been missing since Sunday afternoon and significantly missed his team's first Euro 2016 match against Poland.
— Steve Hudson (@hudo) June 14, 2016
It is believed that he has last seen heading towards the French costal city's beach.
Among those who retweeted the appeal was Calum Best, the socialite son of Belfast legend George, and radio presenter Colin Murray.
Any1 in France for Euros seen this young man please let me know. He is Kane Leslie. Not heard from since yesterday pic.twitter.com/8HTskXBwCa
— Matt Bailey (@mattbailey68) June 13, 2016
He has now officially been reported as a missing person to French police. A close friend – Steve Hudson – who is driving the campaign with the hashtag #findKane added on Twitter this morning that he believes Mr Leslie has lost his wallet.
Anyone with information about Kane's whereabouts is being asked to contact Steve on social media.
Yesterday, it was revealed that a young Northern Irish fan had become the first fatality of Euro 2016. Darren Rodgers, who was 24 and from Ballymena, fell 8metres to his death on Nice's beach promenade.
As a mark of respect, Republic of Ireland fans stood up and applauded on the 24th minute of their team's game against Sweden yesterday evening.