Interior Ministry said attack targeted police convoy as it drove through El-Arish, provincial capital of North Sinai.
A roadside bomb in the North Sinai town of El-Arish killed three Egyptian police conscripts on Wednesday, the interior ministry said.
Jihadists have waged an insurgency in the restive peninsula that has killed hundreds of policemen and soldiers since the army toppled Islamist president Mohamed Morsi in 2013.
The interior ministry said Monday’s attack targeted a police convoy as it drove through El-Arish, the provincial capital of North Sinai.
The insurgency is led by the Islamic State jihadist group’s Egypt affiliate.
The group, which often claims attacks against security services, also said it planted a bomb on board a Russian airliner over Sinai last October, killing all 224 people on board.