A massive blast shook Gaza City in the Hamas office attack
Israeli aircraft have struck a number of targets in Gaza, including a Hamas office, after vowing a severe response to rocket attacks on its soil.
A top Hamas commander was killed in an attack on a car and an office of the Hamas-run Executive Force was bombed.
The attacks came as efforts to end five days of fighting between rivals Hamas and Fatah, that has left up to 40 people dead, again appeared to fail.
Suicide bomb threat
An Israeli air strike destroyed the second floor of a two-storey building belonging to the Executive Force, a militia force tasked with maintaining security in Gaza.
One person was killed and about 45 people injured.
BBC NEWS | Middle East