Michael Dixon travelled to Costa Rica after spending a week in New York
The family of a British journalist missing in Costa Rica says searches for him are continuing.
Michael Dixon, 33, was last seen by staff at the Villas Macondo hotel in Playa Tamarindo on the Pacific coast at 0900 on 19 October.
Hotel staff raised the alarm after he told them he was going swimming at the popular surf resort and did not return.
A foreign office spokeswoman said his family was being provided with consular assistance.
Mr Dixon's brother David told users of a Facebook group set up to help find Mr Dixon on Sunday: "Still no sign of Michael. The search continues."
He wrote on the social networking site that searches for Michael had already been carried out by air, boat and foot.
Mr Dixon had travelled to Costa Rica after spending a week with friends in New York.
Tamarindo security ministry official Sabino Reyes said the hotel reported Mr Dixon missing after he did not return after going swimming.
He had told staff there that he was intending to stay for one night or maybe more.
Information about the search on the Facebook campaign page says his hotel room was found undisturbed with all of his belongings accounted for.
His family and friends first became concerned about him when he failed to report for work for the first time in seven years on Monday.
Mr Dixon works in Brussels for RISI, an American company providing information on the forestry industry.
The Foreign Office spokeswoman said: "We can confirm that a British national was reported as missing in Tamarindo Beach, Guanacaste, Costa Rica on 21 October 2009."
Mr Dixon is about 5ft 6in tall (1.7m) and weighs around 10st 2lb (65kg) and was wearing shorts and a T-shirt when last seen.