CAIRO — Christians angered by the killing of four Christians in weekend sectarian violence clashed Sunday with a mob throwing rocks and firebombs, killing one and turning Cairo's main Coptic cathedral into a battleground.
The clashes raised tempers in an already tense political atmosphere, as workers shut down the country's trains in a strike over wages and a dispute over the nation's chief prosecutor entered a new phase — all signs of two years of unending turmoil.
Reacting to Sunday's violence, the Muslim Brotherhood's political party blamed "dubious" attempts by unnamed parties to broaden instability in Egypt by igniting sectarian violence and spreading chaos.
A liberal opposition group, the Popular Current, said the clashes were symptomatic of the failure of the state to protect its citizens, calling on Islamist President Mohammed Morsi and his government to resign.
Morsi said in a statement late Sunday that he spoke to Pope Tawadros II by phone. He gave orders to authorities to guard the cathedral and citizens in the area, adding that protecting the lives of Muslims and Christians was a state responsibility.
"I consider any attack on the cathedral as an attack on me, personally," he said.
The clashes at the St. Mark Coptic Orthodox Cathedral began just after hundreds of angry Christians left the complex to stage an anti-government march following the funeral for the four Christians killed in sectarian clashes Saturday.
A mob, described by witnesses as residents of the area, pelted them with rocks and firebombs and fired birdshot, forcing them back inside the complex. Few police were present.
By the time police arrived in larger numbers, the church was the scene of clashes between those locked inside and the mob outside, as the two sides exchanged rocks and firebombs. Police fired tear gas, and gas canisters landing inside church grounds caused a panic among women and children. People outside the church cheered.