A car bomb targeted an army checkpoint in Sheikh Zwuied area in North Sinai yesterday, killing 28 soldiers and injuring 26 others, said Salah Sallam, the head of Doctors Syndicate in North Sinai who termed it a terrorist attack.
After hearing the explosion, other Egyptian soldiers rushed to the spot to help their colleagues when unknown militants opened fire on them, according to CBC, an Egyptian privately channel.
In a separate incident, three other soldiers were killed when unknown gunmen opened fire at a military checkpoint near al-Arish city, close to Egypt's border with Gaza.
North Sinai has witnessed many violent attacks by militants since the Egyptian Revolution of 2011, that toppled ex-president Hosni Mubarak.
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Sinai-based Ansar Beyt al-Maqdis militants have escalated its attacks on police and military officials after the ouster of former president Mohammed Morsi in July last year. Over 500 security personnels have been reported killed since then.
The military has launched security campaigns in the area, arrested suspects and demolished houses belonged to terrorists, including those facilitating tunnels leading to the Gaza Strip.