The tense situation between the supporters of ousted President Morsi and the military intensified: In Cairo, Muslim Brotherhood seem to have stormed a government building in Alexandria they were hundreds on the street. Prior to the detention of Morsi had been extended by 30 days.

Supporters of ousted former president Mohammed Morsi have stormed a government building in the capital, Cairo. The Reuters news agency reported, citing the state TV and witnesses. The Muslim Brotherhood protest against the forcible eviction of two protest camp in Cairo and demand that Mursi is reinstated in his office. He is since the beginning of July this year at an undisclosed location in the arrest, he will be accused of murder and espionage.

State TV said Islamists set fire to the governorate headquarters in the capital as the number of people killed in Wednesday’s clashes rose to at least 525.

The group, which backs ousted Islamist president Mohamed Morsi, plans to stage a march in Cairo this afternoon to protest against the deaths.

A month-long state of emergency has been declared in the country following the violence that began when security forces stormed two camps set up in support of Mr Morsi.

Brotherhood spokesman Gehad El Haddad wrote on his Twitter page: “We will always be non-violent and peaceful. We remain strong, defiant and resolved.

“We will push (forward) until we bring down this military coup.”

A spokesman for Egypt’s health ministry told the Associated Press that the number of dead had reached 525 – which the interior ministry has said includes 43 police officers.

Hundreds more have been injured. The Muslim Brotherhood claims more than 2,500 died.

Officials said 84 people, including Muslim Brotherhood members, have been referred to military prosecutors on charges of murder and burning churches.

The US was among a number of countries to have condemned the violence, while both the UK and France summoned their respective Egyptian ambassadors to voice their concern.

The clashes spread from the capital to other parts of the country, including the Mediterranean city of Alexandria. A curfew from 7pm to 6am was declared in Cairo and 13 other provinces.

Hazem Al Beblawi, Egypt’s Prime Minister, said he remained committed to the democratic process under a civilian state.

But he justified the use of force saying that Morsi loyalists had been sowing chaos around the country, “terrorising citizens, attacking public and private property”.

“The state had to intervene to restore security and peace for Egyptians,” he said. “No democratic country would impose an emergency state unless it is absolutely necessary.”

US Secretary of State John Kerry called the events “deplorable”.

“Violence will not create a roadmap for Egypt’s future. Violence only impedes the transition,” he said.

He added that the promise of the 2011 revolution has not yet been fully realised.

Egypt’s vice president, Mohamed ElBaradei, announced his resignation following the violence.

“It has become too difficult to continue bearing responsibility for decisions I do not agree with and whose consequences I fear,” he said.

Sky’s Middle East Correspondent Sam Kiley was reporting earlier from inside the Rabaa al Adawiya camp.

Describing the fighting he said: “I have covered many wars and this is as severe a battlefield as I have witnessed, with the exception of scenes in Rwanda.

“There are dozens and dozens of people who have been shot in the head, neck and upper body.”

The unrest spread beyond the capital, as supporters of Mr Morsi clashed with police in the Nile Delta cities of Minya and Assiut, as police stations, government buildings and churches were attacked or set ablaze.

In Alexandria, tear gas canisters rained down on a pro-Morsi march in the Sharq neighbourhood, amid repeated bursts of automatic gunfire.

Residents armed with clubs came out of their homes and shops to help the police, detaining Morsi supporters and handing them over to officers at the Sharq police station.

Morsi supporters, carrying Egyptian flags and pictures of the deposed leader, then clashed with his opponents on a road carpeted with rocks.

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