Gunmen from the rival Palestinian groups Fatah and Hamas have battled in the Gaza Strip in a renewal of factional fighting that killed at least 11 people Monday.
There were clashes at two hospitals -- three Palestinians were killed in one of those clashes at a hospital in the northern Gaza town of Beit Hanoun.
Nearby in Beit Lahiya, Hamas gunmen raided the home of a top member of the the military wing of Fatah and killed him. Medics say his body was hit by 45 bullets.
Gunmen also fired at the offices of Palestinian Prime Minister Ismail Haniyeh of Hamas, disrupting a Cabinet meeting, but no one was hurt.
The fighting shattered a ceasefire declared just hours earlier.
Both Mr. Haniyeh and Palestinian President Mahmoud Abbas called for calm.
The fighting made it dangerous for Gaza high school students taking their matriculation exams.
Fatah and Hamas agreed to form a unity government in March in a bid to stop factional violence.
The latest failed truce was brokered by Egypt.