WASHINGTON (AP) — Iran confirmed on Friday that it has detained four journalists, including a reporter for The Washington Post and two freelance photographers, but did not disclose details about why they were being held.

The Washington Post said its correspondent, Jason Rezaian, and his wife were detained Tuesday evening in the Iranian capital, Tehran. The newspaper said Rezaian, 38, holds both American and Iranian citizenship. His wife, Yeganeh Salehi, is an Iranian citizen who has applied for U.S. permanent residency and works as a correspondent for a newspaper based in the United Arab Emirates. The other two American photojournalists have not been identified.