Iranian protesters stormed two British Embassy compounds in Tehran Tuesday, smashing windows, hurling petrol bombs and burning the British flag in a protest against sanctions imposed by Britain, live Iranian television showed.

Iran's semi-official Mehr news agency said protesters took six British diplomatic staff hostage from an embassy compound in the north of the city but it withdrew the story from its website minutes later without giving any explanation.

The attacks followed the rapid approval by Iran's Guardian Council of a parliamentary bill compelling the government to expel the British ambassador in retaliation for the sanctions. A lawmaker had also warned Sunday that angry Iranians could storm the British Embassy as they did the U.S. mission in 1979.