An explosion destroyed the house of Palestinian Preventive Security Squad officer in Jalabia camp north of Gaza strip, security sources said on Thursday. The sources, who asked not be named, said that the unknown gunmen used explosives to destroy the house of the officer, Raed Naser, smashing the house, late on Wednesday.This is the second time that shodowy attackers use explosives to tear down a security officer's house in the region. The house of officer Shadi Masoud was recently blown up by unknown gunmen. The incidents are under investigations to indentify the culprits, the sources said. The camp witnessed many attacks on Palestinian security forces reminiscent of the shooting of Ahmad Al-Gandoor, a member of Iz Al-Adeen Al-Qassam Martyrs Brigade north of Gaza strip.