Son says he met Karroubi in his home in Iran

The son of Iranian opposition figure Mahdi Karroubi says he met his parents in their home, the clearest evidence yet that Karroubi has been under house arrest.

Mohammad Taqi Karroubi says he was allowed by security forces to meet his father in his house, according to opposition website kaleme.com.

The children of opposition leader Mir Hossein Mousavi also have said their parents are under house arrest.

Last month, the opposition reported that the two leaders were moved to a prison in Tehran. This month, it said they'd been taken back to their homes.

Iran authorities have confirmed that all outside contact with Mousavi and Karroubi have been cut as part of a campaign to silence dissent.