EL-ARISH, Egypt (Ma'an) -- Two Egyptian border guards injured on Thursday after an explosive device exploded near military vehicles near the Gaza border, security officials said.
The two wounded soldiers were transferred to el-Arish military hospital.
The Egyptian army was working to remove trees and plants on both sides of the Rafah-el-Arish international road to prevent forces from coming under sniper fire.
The Egyptian army seized 102 people they described as wanted. They included five members of the Muslim Brotherhood, according to the officials.
Earlier, armed men shot and killed an Egyptian policeman in el-Arish, security officials said.
Kamel Karim, 30, was shot while walking to work by gunmen who opened fire from a vehicle before fleeing the scene.
On Wednesday, the Egyptian army launched a military campaign in the Sinai seizing stores of weapons and uncovering a below-ground field hospital in Rafah, security sources said.
Forces deployed in al-Mahdiya village south of Rafah, al-Muqata village and al-Dahier village south of Sheikh Zwaied.
They demolished the house of an Islamist leader and during the process uncovered rockets, explosive belts and rocket-propelled grenades among other lighter arms, the sources said.
The army also uncovered a tunnel as well as a below-ground medical clinic equipped to help smugglers, they said.
Four people identified as gunmen were detained and forces destroyed trees on both sides of the Rafah-el-Arish road.
Egyptian armed forces launched large scale military action against militants in the Sinai Peninsula in early September, in what officials described as the largest mobilization of force in the area since the 1973 war with Israel.
At least 2,000 have been killed and more than 3,000 detained across Egypt in the crackdown on the Muslim Brotherhood since Aug. 14, when police forcibly dispersed two protest camps in Cairo.