An Egyptian military source told state news agency MENA that a member of a terrorist group was killed on Sunday as he was attempting to plant an explosive device on El-Sheikh Zuweid road in north Sinai.
The source further denied media reports that the explosion happened in the vicinity of a vehicle owned by security forces.
Hours earlier, Al-Ahram reported that a bomb exploded late Sunday in the region close to a military vehicle.
The military source refuted reports of an Israeli patrol being attacked by gunmen south of the Rafah border, stressing that what had taken place was an exchange of gunfire between Egyptian security forces and terrorists trying to cross the border.
On Friday, a policeman was killed in a terrorist attack on a checkpoint in the Sinai.
Last week, at least ten policemen were killed in Sinai in separate attacks.