Meanwhile, a Hamas-led security force has said that it found a bomb outside the parliament building in the Gaza Strip.
Islam Shahwan, a spokesman for Hamas' Executive Force said: "We have thwarted a bombing attack against the parliament headquarters."
He said the bomb contained 15kg of explosives and was placed at the gate of the parliamentary compound.
"The engineering unit of the Executive Force defused the device. The Executive force is searching for the perpetrators."
There was no immediate claim of responsibility.
Hamas took control of the Gaza Strip after fighting against Fatah three months ago.
However, violence has erupted between the two groups in recent weeks during a series of open-air prayer meetings organised by Fatah which had been banned by Hamas.