Death toll from Friday violence in Egypt rises to 4; results expected on constitutional vote

Supporters of ousted Islamist President Mohamed Morsi clash with security forces in the Nasr City neighborhood of Cairo, Egypt, Friday, Jan. 17, 2014. Supporters of Egypt's toppled president held sporadic protests against this week's constitutional referendum as authorities say at least one person has been killed in clashes. (AP Photo/Ahmed Abd El Latif, El Shorouk Newspaper) EGYPT OUT (The Associated Press)

Egyptian security forces deploy during clashes with supporters of ousted Islamist President Mohamed Morsi in the Nasr City neighborhood of Cairo, Egypt, Friday, Jan. 17, 2014. Supporters of Egypt's toppled president held sporadic protests against this week's constitutional referendum as authorities say at least one person has been killed in clashes. (AP Photo/Ahmed Abd El Latif, El Shorouk Newspaper) EGYPT OUT (The Associated Press)

Egyptian security forces move in to position during clashes with supporters of ousted Islamist President Mohamed Morsi in the Nasr City neighborhood of Cairo, Egypt, Friday, Jan. 17, 2014. Supporters of Egypt's toppled president held sporadic protests against this week's constitutional referendum as authorities say at least one person has been killed in clashes. (AP Photo/Ahmed Abd El Latif, El Shorouk Newspaper) EGYPT OUT (The Associated Press)

Egypt's Health Ministry says the death toll from street violence Friday has risen to four, hours before authorities release the results of this week's constitutional referendum.

The ministry said Saturday that 15 people were also injured in the clashes, which began after supporters of the ousted Islamist president took to the streets in Cairo and other provinces to denounce the draft charter. Police fired tear gas and arrested dozens in their crackdown on demonstrations held without permits.

Since a popularly backed military coup overthrew Mohammed Morsi in July, Islamists have been staging near-daily protests against interim authorities they consider illegitimate. Demonstrations often end violently.

An initial, informal count showed more than 90 percent of voters backed the document. Official results will be announced by the high electoral committee later Saturday.