Iran Arrests 3rd Outspoken Filmmaker In Escalating Crackdown

In Tehran, a third filmmaker was arrested in less than a week. He was detained while discussing another filmmaker's case and is now held for supporting anti-government protests. The Khan Film Festival has called for his immediate release.

Who is the filmmaker mentioned in the text that was arrested in Tehran?

How many filmmakers were reported to have been arrested in Iran in less than a week?

What event was the filmmaker discussing when he was detained?

What was the reason for the filmmaker's arrest according to the text?

What did the Khan Film Festival officials demand regarding the arrested filmmaker?