Several well-sourced Dish readers are relaying the unverified news. One writes:
According to a Farsi source, Mousavi's nephew (his sister's son), Seyyed Ali Mousavi, has been killed in today's events.
Another writes:
Mousavi's 20 year old nephew , Ali Mousavi, was killed around noon. Mousavi is in the hospital himself right now.
Another:
friend watching BBC in Iran says they are reporting Mousavi's nephew was among those killed today - possibly from opposition website
We will update with confirmed details. Update: the second reader adds:
BBC and ParlimanNews (the official website of minority reformists in the parliament) and Kalameh, the closest website to Mousavi. All reporting