Police are seeking information about a 23-year-old man who was last seen three weeks ago.
Ankur Sharma hasn't contacted his family in India since June 9 and they want to know if he is okay.
Detective Grant Arrowsmith said police were treating it as a "missing persons case" for the moment because there was no reason to suspect anything "untoward" had happened to Mr Sharma.
"But obviously we would like to hear from anyone who may have seen or heard from him so that we can reassure everyone, including his worried family, that he is okay.
"Alternatively, Ankur is asked to get in touch with us directly, or anonymously with no strings attached, so that we can reassure everyone who is concerned about him that he is safe and well."