Three police conscripts were injured in North Sinai on Sunday during an ambush by unknown assailants.
The attackers fired at an interior ministry bus in Sheikh Zuwayed city. The injured were then transferred to the hospital, Ahram Online reported.
A Ma'an correspondent said that an unspecified Wahhabi militant group attacked a bus carrying members of the Egyptian police near Abu Taweelah village in the northern Sinai Peninsula, near the Egyptian border with the Gaza Strip.Security sources pointed out that the gunmen set up an ambush in order to entrap the bus after following it. Clashes took place in the area following the ambush, according to Ma'an News Agency.
Militants have stepped up their attacks against security forces in Egypt's restive peninsula  following the popularly-backed military ouster of Islamist president Mohamed Morsi in July. These attacks have left dozens of security forces dead, according to Ahram Online.
In response, the military has launched a "counter-terrorism" campaign in North Sinai . According to the army, security forces have killed dozens of alleged terrorists and arrested at least 300 others since Morsi's ouster.