CAIRO — An Egyptian soldier was killed Wednesday when a roadside bomb targeted an armored vehicle in the restive Sinai Peninsula, medical and security officials said. Four soldiers were also wounded in the attack near the north Sinai capital of El-Arish, the officials said. Security forces are struggling to quell an insurgency that has killed scores of soldiers and policemen in the peninsula bordering Israel and the Palestinian Gaza Strip. The attacks surged after the military overthrew Islamist president Mohamed Morsi last year, and the militants extended their reach to the Egyptian mainland with a series of bombings. — Reuters