It's time for the United States to hold Iran accountable.

At least a dozen senior officials who were part of the negotiating team that conducted talks with the west regarding the Islamic Republic's nuclear program were arrested by Iranian authorities on espionage charges, Channel 2 citing an Iranian member of parliament reported Friday.

Iranian MP Husein Al Haj  said earlier this week that some of those arrested had dual citizenship but he did not disclose their identities or nationalities. 

Government controlled media in Iran did not comment or acknowledge the arrests but Arab media outlets have been covering the story quite extensively.

Iranian authorities earlier in the year had carried out a similar arrest against another member of the negotiating unit, claiming the suspect was a "spy who had infiltrated the nuclear team."

The suspect was later released on bail but was still under investigation at the time, former Iranian minister of intelligence Gholamhossein Mohseni Ejei said at a news conference on August 28.

Ejei was responding to a question about an Iranian lawmaker's assertion that a member of the negotiation team who had dual nationality had been arrested on espionage charges.

Tehran's prosecutor general on Aug. 16 announced the arrest of a dual national he said was linked to British intelligence, but made no mention of the person being in the nuclear negotiations team. 

Earlier in August, Iran executed an Iranian nuclear scientist who had been detained since 2010 when he returned home from the United States, after a court convicted him of spying for Washington.

Read more at the Jerusalem Post.