Security forces have detained a Jewish American man for illegally entering Iran from Pakistan, state television reported Friday. The broadcast did not identify the man. It said he was arrested Tuesday in Sistan-Baluchestan, a province in southeastern Iran that borders Pakistan. The television gave no further details. An Iranian police officer told The Associated Press that the American's motives for crossing the border illegally were not yet known. The American was being interrogated, the officer said, speaking on condition of anonymity. American citizens are allowed to enter Iran provided they obtain a visa beforehand.