Hamas stronghold
Gaza war continues as Egypt seeks truce
Qais Abu Leila, a senior Palestinian official, said Cairo had proposed an indefinite ceasefire.
Israel said it would hold fire in most of the Gaza Strip to facilitate the entry of humanitarian aid.
Tension has mounted between the two countries over US mediation to end the almost three-week-old war.
Israel’s Shin Bet security agency said the suspects were being questioned at one of its installations.