Josh Sanchez-Maldonado, a trader by profession from San Francisco, disappeared after travelling to London for a job interview, police said Thursday.

The 24-year-old was last seen leaving the St. Giles Hotel in Feltham after midnight on Oct. 21, and there has been no word from him since, according to ABC NewsHe was scheduled to fly back to San Francisco via Dublin the following day, but records indicate he wasn't on that flight.

London's Metropolitan Police are unsure what the reason for his disappearance could be, since Sanchez-Maldonado was not believed to have any money nor have access to it, according NBC News.

His family has since flown to London to search for their missing relative, and are particularly worried since it was the first time Sanchez-Maldonado had travelled outside the U.S. on his own, according to the Evening Standard.

In a statement issued after their arrival, his relatives said: "Josh is a lovable person and we have left our world back home to be here for him. He is very goal oriented, very organised, detailed, kind, lovable and a respectful person. He has always kept in close communication to us. He is outspoken and very expressive. The whole family is highly concerned for his well-being. We really wish he contacts us as soon as possible."

"Josh please contact us, your parents, your brother or sister through email, text, phone call or by any other means," the statement added.

The U.S. Embassy in London is already aware of the disappearance and said it is working closely with Sanchez-Maldonado's family and British police.