Explosion rocks Gaza near PM Haniyeh's house

An explosion ripped through the Shati refugee camp near Palestinian Prime Minister Ismail Haniyeh's house after nightfall Monday, witnesses said. There was no immediate word of casualties. Haniyeh's Hamas and rival Fatah forces have been fighting for several months. In another incident around the same time, security officials said Hamas militants fired a rocket-propelled grenade at a police station near Haniyeh's office in Gaza City.