An investigation of the event concluded that the event was not caused by a terrorist attack (the disaster occurred during the Second Intifada). This was based on the testimony provided by many of the wedding guests present in the building during the disaster. Witnesses reported seeing a dangerous sag in the floor moments before the collapse. An initial inquiry blamed the collapse on the Pal-Kal (he) method of constructing light-weight coffered concrete floor systems which was banned shortly after the completion of the wedding hall since it was known and proven to be unsafe. Further review pointed to a combination of two alternative causes.