Badea Abu Al-Naja Saudi Gazette MAKKAH – Two workers were killed and several others injured as a two-story building collapsed in Makkah's Al-Shawqiyah district Wednesday afternoon. The accident occurred around 5 p.m. Civil Defense rescue units were continuing the search for survivors under the building's debris late into the night. Four people have been rescued so far. The cause of the collapse and the extent of damage are still unknown. "Investigations are under way to determine the cause and estimate losses," Civil Defense spokesman Maj. Naif Al-Shareef said. Sources disclosed to Saudi Gazette that an engineering committee has been formed to pinpoint the possible causes of the accident.