Egypt’s security forces have clashed with protesters frustrated by the slow pace of change in the months since long-time President Hosni Mubarak was deposed in February.

Thousands of protesters took to the streets to demonstrate against the military junta that took over responsibility for maintaining order until a new president and parliament are elected. Security forces opened fire on the demonstrators, killing two people and injuring more than 600 others, according to reports from Cairo.

The violence, which took place in and around Tahrir Square, has put pressure on Egypt’s ruling generals and raised questions about their ability to maintain order throughout polling on 28 November. The elections are the first of three rounds to elect members of parliament. Presidential elections are scheduled to take place in March or April 2012.