Unidentified assailants fired two mortars at a security checkpoint in Rafah on Tuesday morning, Al-Ahram Arabic news website reported.
Nobody was killed or injured.
Egypt's government declared a three-month state of emergency in parts of North Sinai on 24 October following deadly militant attacks that killed at least 32 members of the security forces.
The army has also enforced a strict daily curfew in the region from 5pm to 7am.
The army has evacuated over 1,100 families living within 500 metres of the Rafah – Gaza border in order to create a buffer zone. The government has announced that it will pay compensation to the displaced residents.
The army has been combating a decade-long jihadist insurgency in Sinai, with attacks increasing over the past year and expanding into Cairo and the Nile Delta. Hundreds of soldiers and police have been killed, while the army says it has killed and arrested hundreds of jihadists. Civilians have also been caught in the violence.
The most prominent of the jihadist groups that have claimed responsibility for the previous attacks in Sinai is Al-Qaeda-inspired Ansar Bayt Al-Maqdis.
Last week an explosion went off next to North Sinai governorate headquarters in Al-Arish. No casualties were reported.
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