A high school student was shot dead Wednesday night when supporters and opponents of toppled Egyptian president Mohamed Morsi clashed in the city of Suez, east of Cairo, security sources said.

Eyewitnesses told state news agency MENA pro-Morsi demonstrators initiated the violence by firing birdshots as they chanted anti-army slogans during their march. Gunfire and Molotov cocktail were used in the ensuing clash and security forces fired shots in the air to disperse crowds.

Abdallah Mohamed Attiya, 17, died from a bullet wound, MENA reported. The Muslim Brotherhood's Freedom and Justice Party claimed Abdallah was a Morsi supporter.

Egypt was rocked by turmoil following the overthrow of Islamist president Morsi by the army amid mass protests against his year in office. Hundreds, mostly pro-Morsi protesters, have been killed by security forces since. The ousted president's Brotherhood movement has also been reeling from a sustained clampdown which saw most of its senior leaders, along with hundreds of Islamists, arrested.

Despite waning street presence, Islamists plan to march to Cairo's iconic Tahrir Square – the epicentre of anti-Morsi demonstrations – on Sunday 6 October, the Armed Forces Day national holiday commemorating the Egyptian army's victory over Israel in the 6 October 1973 War.

Morsi loyalists briefly made it to Tahrir Square on Tuesday for the first time since his deposition, until area shopkeepers and residents soon drove them away amid clashes.

The European Union Foreign Policy Chief Catherine Ashton is currently in Cairo to promote reconciliation between the country's interim administration and the Muslim Brotherhood.