An Iranian reformist website says authorities have detained several people during the funeral for the father of a top opposition leader.
The Thursday report by kaleme.com says security forces arrested seven people from those attending the funeral ceremony for Mir Hossein Mousavi's father.
Mir Esmail Mousavi, who died Wednesday at 103, was buried at the Tehran cemetery under tight security.
It was not clear if Mousavi himself, who has been under house arrest since February when he called for rallies in solidarity with the Egyptian uprising, attended the funeral.
Mousavi ran against President Mahmoud Ahmadinejad in 2009 and lost, in an election his supporters say was fraudulent. The government has since ruthlessly cracked down on rallies protesting the results.