LatestTickerWorld 50 workers trapped as building collapse in Riyadh By jasarat_admin - April 27, 2015, 11:09 PM 329 Share on Facebook Tweet on Twitter RIYADH : 50 workers have been trapped in rubbles as under constructions Convention Center was collapsed in Riyadh. Most of the workers belong to Pakistan. Rescue officials recovered four injured alive. While four workers had died.