From al-Jazeera:
Hermina, a parish priest, told AFP news agency that the dead were Copts who died when "thugs and Salafists fired at them" in the late afternoon attack.
The church floor was bloodstained as wounded Christians were brought in for treatment.
Shahira Abu Leil, a blogger and activist, told Al Jazeera that Salafists were not involved in the clashes, and that attempts were being made to bring security to the area.
"A building was also set on fire, and people are trying to prevent a possible explosion from gas leakages," she said.