Iranian demonstrators are defying a heavy police presence to protest Sunday night in Tehran over the Islamic Republic's days of denials that it shot down a Ukrainian passenger plane and killed 176 people.
Videos posted online Sunday night showed protesters shouting anti-government slogans and moving through subway stations and sidewalks.
Many were near Azadi, or Freedom, Square after an earlier call for people to demonstrate there.
Other videos suggested similar protests were taking place in other Iranian cities.
Iran has deployed riot police in the capital expecting more protests after its Revolutionary Guard admitted to accidentally shooting down a passenger plane.