Cairo: Supporters and opponents of the Islamist President Mohammad Mursi on Friday clashed in the Egyptian capital, the latest in incidents of violence between both sides.

Islamists, pushing for reform of the judiciary, and Mursi’s opponents hurled stones at each other in the vicinity of the Supreme Court and Tahrir Square in central Cairo. Gunfire was heard during the fighting that spilled over into nearby streets and the key October 6 Bridge.

Meanwhile, a bus ferrying Islamists to Cairo, was also set ablaze in Abdul Moneim Riyad Square near Tahrir. Islamists accused masked opponents, known as Egypt’s Black Block, for the arson.

Hundreds of Mursi’s Muslim Brotherhood followers and Islamist allies gathered outside the court building, calling for “purge of the judiciary” after a court earlier in the week ordered the release of the deposed president Husni Mubarak pending a retrial for complicity in protester deaths.

The protesters chanted slogans such as “You bad judges, the revolution continues; Oh president go ahead purge the judiciary and we’ll follow you.”

The secular-leaning opposition accuses the ruling Muslim Brotherhood of seeking to tighten its hold on state institutions, including the judiciary. Relations have been tense between judges and Mursi since he took office in July over the Islamist president’s perceived violation of the judicial authority’s independence.