Israeli army troops invaded, on Thursday at dawn, Askar refugee camp in the West Bank city of Nablus and arrested one resident.
Ahmad Ghandour, 18, was arrested when soldiers stormed the camp and searched several houses.
Ghandour was taken to unknown destination, local sources reported.
In an separate incident, one student of Al Najah University in the city went missing after attempting to cross Beit Eeba checkpoint, near Nablus.
The student, a resident of Qalqilia, attempted to cross the checkpoint, but was apparently detained there by the soldiers.