3 died of medical issues - stroke, heart attack - the leo condition is uncertain
LEO is #5 and died of head injury after being struck by a fire extinguisher.
Those people who died due to crowd crushing - if they died due to crowd crushing - were basically killed by whomever opened the doors to the building.
For reference: the Hillsborough disaster was a fatal ‘human crush’ incident in the english-speaking world. This may have been the same on a smaller scale.