Swiss diplomats are trying to find out what happened to three American hikers reportedly captured in Iran, the Foreign Ministry said.
The Swiss Embassy in Tehran is working to learn more about their fate through its contacts with the Iranian Foreign Ministry, spokeswoman Nadine Olivieri said.
Iranian guards detained the three tourists Friday after they allegedly crossed the border from northern Iraq, Iran state TV said.
One of the missing has been identified as Joshua Fattal by Kurdish authorities. His mother, Laura Fattal of Elkins Park, Pa., issued a brief statement asking for information.