Egyptian security forces killed 11 suspected militants in an exchange of fire in the North Sinai town al-Arish, the official MENA state news agency reported.
The clash occurred after security forces tried to apprehend a group of militants at an abandoned petrol station. They were planning “terrorist operations”, the report said.
Those killed included “two of the most dangerous terrorist elements”, the report said, naming them as Mohamed Ibrahim Jabr Shaheen and Jumaa Iyad Marshoud.
Police seized guns and cartridges during the clash, it said.
MENA did not say when the clash happened or give other details about the suspects and mentioned no casualties among security forces.
Separately, two security officers were killed and four others injured when an armoured vehicle exploded on Sunday in the border town Sheikh Zuweid, security sources told Reuters.
Egyptian troops, backed by police, are conducting a major operation against Islamist militants.
Egypt os fighting an insurgency led by Islamic State and concentrated in the Sinai Peninsula since the Egyptian military overthrew President Mohamed Mursi of the Muslim Brotherhood in mid-2013.