(Adds details) GAZA, June 19 (Reuters) - Hamas rejected on Tuesday President Mahmoud Abbas's decree outlawing the group's Executive Force and said the real Palestinian government was still headed by Prime Minister Ismail Haniyeh of Hamas. Senior Hamas leader Khalil al-Hayya told reporters in Gaza the Islamist group was ready to hold talks with Abbas's Fatah faction to try to find common ground. Fatah rejected dialogue with the group, which won Palestinian parliamentary elections in 2006, following its violent takeover of Gaza. "Hamas rejects the decision by Abu Mazen (Abbas) to outlaw the Executive Force because his decision contradicts the law," Hayya said. "The current government of national unity is the legitimate caretaker government and we do not recognise the emergency government." Hamas's Executive Force and armed wing spearheaded Hamas's violent takeover of Gaza last week. "The Fatah central committee decided today not to convene any dialogue, or any contact or any meetings with the Hamas movement," the Fatah committee said in a statement.
