Ester Meerman photographed clashes and protests in Ramsis Square in Cairo on Friday. On Twitter, she wrote: "Saw at least 12 dead at fatah mosque field hosp TWELVE."
See more of her photos on Flickr.
Hundreds have been killed and thousands injured in violence this week, as police forces fought with protestors, supporters of the Muslim Brotherhood and backers of deposed President Mohammed Morsi in Cairo and other locations through the country.
Read ongoing Yahoo News coverage.