Yemeni security forces fired live bullets and tear gas on two pro-democracy demonstrations today, killing two people – including a 15-year-old student – as the government clamps down on a growing protest movement, witnesses said.

Yemeni security forces stormed a square early today where thousands of pro-democracy protesters have been camped out for the past month, firing tear gas and live ammunition during a pre-dawn raid that killed at least one person, doctors and witnesses said.