The Egyptian army killed four militants and arrested 19 suspects in North Sinai's Rafah and Sheikh Zuweid cities, Youm7 news reported Saturday. A security source said that the army launched airstrikes against terrorist sites in Sinai, killing four militants as well as destroying 17 terrorist outposts and three tunnels. The army seized vehicles and motorcycles without license plates, the sources added. Since September 2013, the Egyptian army has been carrying out an ongoing military campaign against terrorist groups in Sinai after they claimed responsibility for several deadly attacks targeting Egyptian military and police personnel.