Japanese tourist missing in SA's far west

Police have found no sign of a Japanese tourist feared missing on South Australia's far west coast.

Police began a search on Saturday night after campers found personal effects strewn near the edge of a cliff on the Great Australian Bight, about 50km west of the Nullarbor road house.

They now believe the items belong to a Japanese man, 52, who may have been cycling in the area.

Police have ended their search for the man who was last seen on March 11 at Ceduna, wearing a long-sleeved khaki shirt.