Oranjestad , Aruba ( CNN ) -- Crews searching for an American woman have looked in Aruban phosphate mines , authorities there said Saturday . Articles of clothing were found Friday in one mine , but authorities had not determined whether they are related to the disappearance of Robyn Gardner , Aruban Solicitor General Taco Stein told CNN . FBI agents on Friday night searched the Maryland home of the suspect in the Gardner case , an agent said . The search occurred in the Gaithersburg residence of Gary Giordano , who is being held in an Aruban jail , FBI Special Agent Rich Wolf told CNN . Agents wearing vests that said FBI and carrying empty cardboard and plastic boxes arrived about 8:40 p.m. Friday . About 15 unmarked cars could be seen on the street , as well as a Montgomery County police vehicle . Supervisory Special Agent Philip Celestini , who was at the residence , declined to comment further on the search , citing the active investigation . Stein said earlier Friday that the suspect will appear in court Monday , where an investigating magistrate could order him held for at least eight more days , order him to remain on the island or release him outright due to a lack of evidence . Giordano was arrested by Aruban police on August 5 , three days after Gardner , 35 , was last seen near Baby Beach on the western tip of the Caribbean island . Giordano told authorities that he had been snorkeling with Gardner , also from Maryland , when he signaled to her to swim back , according to a statement . When he reached the beach , Gardner was nowhere to be found , Giordano allegedly said . The area that Giordano led authorities to is a rocky , unsightly location that locals say is not a popular snorkeling spot . Although prosecutors have continued to identify the 50-year-old American man by his initials , GVG , they also released a photo of a man who appears to be Giordano . His attorney , Michael Lopez , also has said that his client is being held as a suspect in Gardner 's death . Lopez has not returned telephone calls seeking comment . Giordano is no longer cooperating with authorities in the investigation , Stein has said . Authorities are concerned for Gardner 's welfare because she has not stepped forward despite all the publicity surrounding the case , Stein said . But they have no evidence that she is dead , he said . Although officials have stopped actively searching for Gardner , they are continuing to seek evidence in the case , Stein said . According to Aruban prosecutors , the missing woman and the suspect arrived July 31 from the United States . Lopez said Tuesday that his client came to Aruba on vacation with a female friend he had met on a dating site and has known for years . The Aruban prosecutor 's office has declined to say what evidence led authorities to suspect Giordano 's involvement in Gardner 's disappearance . Richard Forester of Maryland said he and Gardner have been dating for the past seven or eight months . He told HLN 's Nancy Grace on Wednesday evening that Gardner was n't the type to go into deep water , and she would more likely stay by the pool . `` It 's just not her to go out and snorkel , '' Forester said . CNN 's Carol Cratty and Kim Uhl contributed to this report .
Authorities search phosphate mines in Aruba . The U.S. Geological Survey said the quake was centered about 20 miles southwest of Aruba. Aruba 's solicitor general says there 's no sign of missing woman , no evidence she is dead . Gary Giordano is being held in connection with Robyn Gardner 's disappearance .