Egypt has reopened its Rafah border crossing with Gaza, allowing people to cross freely for the first time in four years.
Hamas blamed Israel on Tuesday for stalling efforts to swap hundreds of Palestinian prisoners for a captured soldier.
A radical Islamist sheikh was among 22 people killed and 120 hurt when Hamas police stormed a Gaza mosque, emergency services said on Saturday.
Senior United Nations officials examined the extent of war damage in Gaza on Thursday.
Tension eased in Gaza early on Tuesday as a fragile ceasefire entered its third day, with residents struggling to absorb the devastation.
The skies over Gaza remained calm on Sunday morning for the first time in 22 days as Israel unilaterally halted its onslaught.
Israel struck fresh targets on Thursday and waged street battles in Gaza as the international community stepped up efforts to broker a truce.
Israeli troops and Palestinian gunmen fought fierce clashes around the Gaza Strip on Tuesday.
Israel pounded Gaza with bombs and shells on Friday, vowing to pursue its war on Hamas despite a truce order from the UN Security Council.
Israeli warplanes bombed suspected arms-smuggling tunnels in southern Gaza early on Thursday, as diplomats worked to secure a ceasefire.