“After 38 days of having been deprived of meeting my father and my mother, I was able to see them at their apartment,” Mohammad Taghi Karroubi wrote on his personal blog, the website Kaleme.com said.
Mehdi Karroubi and his wife Fatemeh were put under “complete” house arrest in early February after calling for an anti-regime protest to take place in the middle of that month.
But opposition websites reported at the end of February that Karroubi and Mir Hossein Mousavi, another top figure in the opposition movement, had been jailed.
The authorities have branded the two men, who have never accepted President Mahmoud Ahmadinejad’s disputed June 2009 re-election, as “counter-revolutionary” traitors and threatened them with legal action.
In a separate report on Friday, Karroubi’s website Sahamnews said that another son of the opposition leader, Ali Karroubi, had been released from jail on bail.
Ali Karroubi, who was arrested about a month ago, paid bail of one billion rials ($90,000, or 63,000 euros), according to Sahamnews.
