A police officer was killed in a blast which targeted an armoured security vehicle in North Sinai's al-Arish late Sunday, security sources said.
The explosion also injured a policeman who was taken to the Arish Military Hospital, the sources added to Aswat Masriya.
Security forces arrived to the scene of the explosion to comb the area and look for the assailants, state-run al-Ahram reported.
Militants have stepped up attacks targeting security forces in Egypt, particularly in the Sinai Peninsula, since the army's ouster of Islamist President Mohamed Mursi in July 2013, which followed mass protests against his rule.
At least 30 military personnel were killed in a suicide blast which targeted a security checkpoint in Sinai's Sheikh Zuweid on October 24, in the worst militant attack since Mursi's ouster.
Egypt's most dangerous militant group, the Sinai-based Ansar Bayt al-Maqdis, claimed responsibility for the attack in a video released on November 14, shortly after pledging allegiance to the leader of the Islamic State fighters in Iraq and Syria.
President Abdel Fattah al-Sisi declared a three-month state of emergency and a nighttime curfew in parts of the Sinai Peninsula in response to the attack.