Another five Palestinians died today in clashes between rival factions in Gaza, bringing to 20 the death toll in three days of bitter fighting.
The violence has scuppered talks on forming a unity government.
Four were killed in early morning firefights in central Gaza City, while a fifth died of wounds suffered on Thursday.
Rival supporters of the ruling Hamas movement and the Fatah faction loyal to Palestinian president Mahmoud Abbas have been clashing in the densely populated streets of Gaza City since Thursday night.
In addition, tit-for-tat kidnappings continued with 19 members of both Fatah and Hamas nabbed in three different abductions in the Gaza Strip, according to security forces.
The fighting, the fiercest since Hamas won parliamentary elections one year ago, has also left around 50 people injured.
Hamas has called for Mr Abbas, who is in Switzerland for the World Economic Forum, to return home immediately to help put an end to the mounting bloodshed.
