Rouhani Iran nuclear deal
The U.S. House approved a resolution Monday night that Iran should immediately release three Americans believed to be in Iranian custody. Above, Iranian President Hassan Rouhani is shown while leaving after delivering a speech at plenary session during the Asian African Conference in Jakarta, April 22, 2015. Reuters/Beawiharta/Files

The U.S. House of Representatives approved a nonbinding resolution Monday night officially calling on Iran to release immediately three Americans believed to be in Iranian custody. The resolution, passed unanimously 391-0, also called on the Iranian government to provide any other information it has about Americans alleged to have disappeared within the Islamic republic.

Monday night's resolution comes amid a high profile fissure between the White House and House Republicans over negotiations with Tehran on the Iranian nuclear development program. House lawmakers have said if the American prisoners are not released, then they will not trust the regime in Iran with regard to the talks.

Among those missing or imprisoned in Iran are former FBI agent Robert Levinson, who has been missing for more than 3,000 days, and Jason Rezaian, a Washington Post reporter with dual American-Iranian citizenship. Rezaian is currently on trial for his role in an alleged espionage plot.