According to alarabiya.net:
Fatah blames Hamas for Gaza bombings
Friday, 7 November 2014
Palestinian President Mahmoud Abbas's Fatah movement blamed Islamist movement Hamas for series of bomb attacks against the homes of Fatah leaders in the Gaza Strip overnight.
“The Fatah central committee condemns the crimes which took place this morning against its leaders and lays the responsibility for these crimes upon Hamas,” senior Fatah official Nasser al-Qidwa told a news conference in the West Bank city of Ramallah.
At least 10 explosions hit houses and cars belonging to senior Fatah members but no casualties were reported.
Hussein al-Sheikh, another member of the Fatah leadership, said he had “no doubt of the fact that Hamas bears the responsibility for what happened to Fatah leaders in Gaza.
”Hamas ousted Abbas loyalists from Gaza in 2007”."-more