Ten Egyptian soldiers were killed and 35 wounded in a car bomb near the North Sinai city of El-Arish, a security official has said.
The soldiers were travelling in a convoy ahead of the attack.
The attack is one of the deadliest in the Sinai Peninsula since al Qaeda-inspired militants began stepping up assaults following the army's ousting of Islamist President Mohamed Morsi in July.
More top news
The 2017 Oscars will be remembered as the year the wrong film got the best picture award, but it wasn't the first memorable mix-up.
The family of a girl who died of an asthma attack after a GP turned her away, are speaking out after the doctor only got a written warning.
An ex-boyfriend murdered a couple after he searched on google for videos on getting revenge and the lengths of sentence for murder.