According to initial investigations by Taipei fire and police authorities, water released on the morning of the 18th by the rupture of a swimming pool at a villa on the road above it, as well as the heavy rains brought by the typhoon, loosened the soil on the hillside and caused the tragedy.
根據台北市消防隊和警方的初步探勘，住戶上方一戶仰德大道別墅中的游泳池在十八日清晨塌陷，大量蓄水與颱風帶來的大雨匯流，使得山坡地土石滑動，才造成下方住宅遭掩埋的慘劇。