Unknown assailants set a policeman’s house in the al-Obour district of Arish city, North Sinai on fire and a mortar missile was shot at a security ambush located near the house. No casualties were reported.
A security source said military troops have been engaged with armed militants since early on Tuesday.
In related news, The Egyptian branch of the Islamic State group released a video Monday showing the jihadists killing a man in North Sinai after accusing him of being a police "spy".
Ansar Beit al-Maqdis — which has pledged allegiance to IS and renamed itself "Sinai Province" — has carried out a spate of deadly attacks on the peninsula since last year.
In the video distributed on Twitter and YouTube on Monday, the Egyptian man accused of being a "spy" for the security services was shot in the neck by the jihadists.
Before the killing, the man identified himself in front of the camera and said the security services had charged him with infiltrating the Sinai-based extremists and collecting information about them.
Jihadists have killed scores of police and soldiers in attacks on the Sinai peninsula since the army deposed Islamist president Mohamed Morsi in July 2013.
They are seeking to establish a province of the self-declared IS "caliphate" straddling parts of Syria and Iraq and say the attacks are retaliation for a deadly government crackdown on Morsi's supporters since his ouster.