Iran's intelligence minister has said that Iran has proof that three Americans detained on spying charges had links to intelligence services.
Haidar Moslehi said "Tehran has compelling evidence that three Americans arrested in Iran last year were cooperating with intelligence services."
He gave no details, saying only "Iran will present its evidence to the media soon."
The three were detained in July last year after they entered Iran from northern Iraq.
Their families said they were hiking and had strayed across the border accidentally.
The United States has called for their release.
compiled from agency reports