IDF troops shot and killed an unarmed Palestinian who approached the security fence separating Israel from the Gaza Strip, the army said Thursday. After dark on Wednesday, the Palestinian approached a no-man's zone along the fence where terrorists frequently try to carry out attacks and threw something, the army said. Suspecting the man was a terrorist, soldiers opened fire and killed him, but when the troops examined the body at daybreak, they realized that he was unarmed, the army said. Palestinian officials identified the dead man as 21-year-old Salem Abu Saada. Also overnight Wednesday, IDF troops arrested 13 terror suspects during West Bank operations, the army said. In Nablus, soldiers arrested a man who was in possession of a handgun. Another suspect was arrested near Jenin, two were apprehended in Ramallah and nine near Kalkilya. On Wednesday evening, troops shot and hit several Palestinian gunmen in the southern Gaza Strip. The army said members of a terror cell were hit but their condition was unknown.