Egypt Latest: At Least 19 Killed in Clashes Over Christian March
Armoured vehicles drive into the crowd in Cairo
2220 GMT: The Ministry of Health now reports 23 dead and 174 injured. A curfew has been called for 2 a.m. to 7 a.m. in central Cairo.
2120 GMT: A pair of juxtaposed images tell a story of the night --- a wife is shown in the first with her new husband, in the second she is holding his hand in the morgue:
2100 GMT: Prime Minister Essam Sharaf has stated on his Facebook page: "What is happening now is not clashes between Christians and Muslims. Rather, it is an attempt to sow chaos and strife."
There are reports of hundreds of people attacking the Coptic Hospital in Ramses, where scores of injured are hospitalised, smashing cars when they could not get into the hospital.
An eye-witness reports a police pick-up truck charging protesters attempting to get to Tahrir Square. Small groups of demonstrators are re-grouping in the surrounding streets.