Two soldiers were injured early Thursday when unidentified gunmen opened fire on a security post in Egypt's North Sinai, a security source told Reuters affiliated Aswat Masryia.

The source added that the incident occured in the town of Sheikh Zeweid.

Militant attacks targeting police and troops have been commonplace since the army's ouster of Islamist president Mohamed Morsi last summer amid mass protests against his year-long rule.

More than 500 people, mostly policemen and soldiers, have been killed in militant attacks, including bombings and shootings. In recent months, the violence has spread to Cairo and the surrounding Nile Delta region.

Islamic fighters say their attacks are revenge against a crackdown waged by authorities against Morsi's Islamist supporters that has killed hundreds and jailed thousands of others.