GAZA CITY, Gaza Strip, (AP) – Hamas forces on Sunday said they discovered a bomb next the Palestinian parliament building in Gaza City and accused the rival Fatah movement of planting the device.

Islam Shahwan, spokesman for Hamas’ paramilitary Executive Force, said the 33-pound bomb was defused after it was discovered at about 5 a.m.

“It’s a dangerous escalation,” he said. “We believe that some elements in Fatah, based in Ramallah, are behind this and other attacks,” he said. No arrests were made.

Hamas has controlled Gaza since vanquishing Fatah forces during five days of fighting in June. Many top Fatah officials were forced to flee Gaza and took refuge in the West Bank city of Ramallah, headquarters of the rival Fatah government of President Mahmoud Abbas.

Hamas has accused Fatah of being behind a recent string of mysterious bombings in Gaza. Fatah has denied involvement in the blasts, which have damaged cars and buildings but caused no injuries.