Suspected jihadists blew up a gas pipeline in Sinai on Tuesday for the fourth time this year.
There has been more than 10 attacks on the pipeline in the past two years, which serves an industrial zone in central Sinai and links to Israel and Jordan.
No casualties were reported and security forces were searching the area, Ahram Online reported.
Continued stoppages to gas being sent led to the end of the deal with Israel last year.
Elsewhere, unidentified gunmen on a motorcycle killed an Egyptian policeman in the Suez Canal city of Ismailia Tuesday morning.
Army spokesman Ahmed Ali said one extremist was killed and seven were arrested in a security operation in Ismailia, the Aswat Masriya website reported. Security forces also seized explosives.
The chaos in Sinai and the escalation of violence against Egyptian security forces by Islamists has increased substantially since Morsi was removed from power in a military coup in July.
Interior Minister Mohamed Ibrahim said police officers are determined to deal with terrorism no matter what the cost, during a meeting with security leaders and officers in Damietta, Egypt’s State Information Service reported on Tuesday.
He warned that the Muslim Brotherhood was attempting to infiltrate police departments to create instability.