San Juan, Puerto Rico ? The weeklong search for an American diplomat has taken a grim turn as investigators on the Dutch island of Curacao said DNA from bloody clothing strewn along a popular beach matched that of the missing man.

Police and prosecutors in this palm-fringed corner of the Caribbean said forensic scientists have confirmed that blood-spattered clothes found on Baya Beach “definitely” belonged to James Hogan, a 49-year-old U.S. vice consul who vanished a week ago. Divers also found his cell phone in the sea.

On Friday, authorities used sniffer dogs to search rocky coastal areas and combed the Caribbean floor with a sonar-equipped robotic device for traces of Hogan. The Curacao prosecutor’s office said the Royal Dutch Navy and the U.S. Navy were assisting.

Investigators on the island of 137,000 inhabitants are still trying to trace where Hogan went after leaving his home to go for a walk on the night of Sept. 24.

He and his wife live in Toni Kunchi, a quiet district outside the capital, Willemstad, that is home to wealthy business owners and diplomats.

U.S. State Department records show that Hogan, who arrived in the southern Caribbean island in August 2008 for a two-year assignment, had a legal residence in Florida, but no city or town is listed.

He completed junior foreign service officer training in 2005 and spent two years as a consular officer in Gaborone, Botswana.