At least 11 security forces members were killed Monday in attacks in Ismailiya province and South Sinai governorate, a region in northeast Egypt, security officials told Efe.
Gunmen killed six soldiers on a military road near Abu Zuer, a town in Ismailiya near the Suez Canal.
At least five people were killed and 50 others wounded when a car bomb exploded outside the provincial security service headquarters in El-Tur, the capital of South Sinai.
Security officials were holding a meeting when the bomb went off.
Gen. Hatem Amin, an assistant to the provincial security chief, was among the wounded.
The car-bomb attack was staged using a police car stolen recently in the city, investigators said.
The attacks come a day after Egypt experienced a wave of violence that left scores dead.
A total of 51 people were killed and 375 others wounded in clashes Sunday involving police and Islamists in provinces across Egypt, the Health Ministry said Monday.
Police fought in the streets with supporters of ousted President Mohammed Morsi.
The National Coalition for the Defense of Legitimacy, which includes the now-outlawed Muslim Brotherhood, had called on Egyptians to take to the streets through Sunday, the 40th anniversary of the start of the 1973 Arab-Israeli War.
The Brotherhood's political arm, the Freedom and Justice Party, dominated the first legislative elections after the 2011 uprising that deposed dictator Hosni Mubarak, and party leader Morsi went on to win the presidential election in 2012.
Egypt's army ousted Morsi in early July amid nationwide protests against his administration. Since then, the security forces have killed around 900 of the deposed president's supporters. EFE