It has now been six weeks since Bramcote man Baljeev Johal went missing after a wedding in Warwickshire.
Twenty-four-year-old Baljeev was last seen with his family on Saturday October 4 at a reception at the Sports Connexion, in Leamington Road, Ryton-on-Dunsmore.
He was reported missing in the early hours of Sunday morning after leaving the venue on foot.
Baljeev's sister, Haneet, has spoken of her brother and appealed for anyone with any information as to his whereabouts to contact police.
She said: "As a family we are extremely concerned for his safety, this is completely out of character for him and we need to know if he is ok.
"It is difficult to carry on with normal daily life and we are all struggling with the knowledge he is out there without knowing if he is safe.
"I want to speak directly to my brother and ask him to call me. If he could just call me and tell me he is alright?
"We were all looking forward to a lovely family Christmas and we all hope and pray that by then he will be back at home with us."
Baljeev is Asian and around 6ft 3ins tall.
He wears glasses and was last seen wearing a slim white shirt with a black jacket and black trousers.
Detective Inspector Jason Downes from Warwickshire Police, who is leading the investigation, said: 'Our search to find Baljeev continues and we are very concerned for his welfare.
"We urge anyone who may have been in Ryton-on-Dunsmore on the night he went missing or has seen anyone matching his description to get in contact.'
Contact Warwickshire police on 101, quoting incident number October 16 and 15 if you have any information.
Alternatively contact the charity Missing People, in confidence, on 116000.