Swiss diplomats are trying to find out what happened to three American tourists who were detained while allegedly hiking over the Iran border over the weekend. Iran's state TV claims the three were detained after they crossed the border from the Kurdish region of Iraq, where they were visiting a resort town. Switzerland has intervened in the region on the U.S.' behalf before. Thirty years ago, when American diplomats were taken hostage in Tehran, the Swiss negotiated with Iran for their release. American Joshua Fattal has been identified by Kurdish authorities as one of the detained.