Palestinians, however, refuse to leave the shared military sites.
Latest violence leaves four dead.
A Palestinian protester uses a slingshot to hurl stones at Israeli troops. Kitrey added that investigators were trying to determine whether Thursday's explosion was the result of a mortar shell lobbed from outside or a grenade thrown from within by one of the Palestinian police officers assigned there. Hours after the district office explosion, an intense firefight erupted at the Erez crossing between Gaza and Israel after Palestinians ambushed an Israeli army patrol. One Palestinian was killed, as was an Israeli soldier, officials reported. Meanwhile, in the West Bank city of Nablus, an activist from the militant Islamic group Hamas died in a car explosion.