TEHRAN , Iran ( CNN ) -- A Swiss diplomat was released from jail Thursday after being arrested on a sex charge , the Iranian media reported . The first secretary of the U.S . Interests section of the Swiss Embassy in Tehran had been in an `` indecent sexual relation '' with an Iranian woman in his car , Iran 's Press TV reported , citing Iranian police . Police spotted the car with diplomatic plates in a parking lot and caught the diplomat . The woman was `` improperly dressed and in an obscene situation , '' Press TV said . The `` sexual relation '' occurred after the diplomat , who was not named , promised he would marry the woman , Press TV reported . Both were released on bail . It was not clear what charges were filed against the woman . Press TV said it had contacted the deputy head of the U.S. Interest Section in Tehran , Elizabeth Bucher , but she would not comment on the report . The suspect is a Swiss diplomat who represents the United States in Iran in the absence of a U.S. presence . The United States and Iran have not had full diplomatic relations since the 1979 Islamic revolution .
Diplomat said to have been in `` indecent sexual relation '' with woman in car . Swiss embassy staffer was seen with woman `` in an obscene situation '' Incident occurred after diplomat promised to marry the woman , reports said .