Family's Desperate Plea To Find Missing Belgian Backpacker

A Belgian family is begging for the public's help to locate missing teenager Théo Hayez who disappeared from the NSW North Coast a week ago.

Lisa Hayez said her family is hoping for any information that could help find her missing cousin, who has been backpacking alone around Australia since November.

The 18-year-old man was last seen at around 11pm on Friday May 31, after leaving the Cheeky Monkey bar on Jonson Street in Byron Bay.

Police were alerted to his disappearance after Théo failed to return to his hostel and could not be contacted.

Théo Hayez has now been missing for more than a week and police hold serious concerns for his welfare. PHOTO: Supplied (Lisa Hayez)

It has now been more than a week since Théo was last seen or heard from and his worried family are hoping the community can help police find him.

Lisa, who has been in Australia since last year, said she saw her cousin just a few days before he disappeared when the pair caught up for a weekend.

"Theo is a very positive person, always smiling and in a good mood," she told 10 daily on Saturday.

Lisa and Théo. PHOTO: Supplied.

Lisa has been sharing photos of her cousin on Facebook over the last few days and asking others to do the same in the hopes they will find her cousin.

"We don't give up, keep sharing," she said on Facebook, as a search party was being organised around the Byron Bay community on the weekend.

Théo was supposed to begin making his way from Byron Bay to Melbourne this week and had plans to return home to Belgium next week.

Lisa told 10 daily Théo's parents and younger brother, who live in Belgium, were aware that their son is missing and are extremely worried.

"They are very worried and are doing everything they can from Belgium," Lisa said.

Théo is supposed to be returning home to Belgium next week. PHOTO: Supplied (Lisa Hayez)

NSW police said they continue to hold "serious concerns" for Theo's welfare.

Théo, who was last seen wearing a black hooded jumper, beige pants and black shoes, is described as being approximately 180-190 centimetres tall with a thin build and blond hair.

Anyone with information is being urged to contact police or Crime Stoppers on 1800 333 000.

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