Professional surfer Arran Strong, 28, is presumed dead after disappearing about a mile off Portugal’s coast. Authorities ended their four-day search on Thursday, with the UK sports governing body confirming the presumed death; the incident has prompted concern across the surfing community.

Strong went missing on Monday while at sea near Portugal. The article does not provide further details about the circumstances of his disappearance, but notes that rescue efforts continued for four days before being halted.