At least 17 people were killed on Wednesday in the Egyptian province of Fayoum, a hospital official said, following fighting at police stations between supporters of deposed President Mohamed Morsy and security forces.
Saad Kamel, head of the morgue at Fayoum general hospital, said the death toll had risen from seven earlier.
Morsy supporters attacked at least two police stations in Fayoum, setting fire to police vehicles outside one, witnesses said.
There were also clashes outside the provincial governor's office.
At least five people were also killed in the city of Suez when supporters of Morsy tried to storm a government building there.
Witnesses said an armored vehicle was set on fire during the attempt to storm the provincial governor's office.
