I'd like to know more about the particulars of this. The Sheriff said the door to the 32d floor was not welded shut, but was secured, whatever that means. From which direction? Did the second person 'secure' it on his way out to keep someone from following him?
I agree any second person likely could not have escaped after the security guard showed up, if there was such a person he must have left in the minutes before the security guard showed up. Maybe even took the elevator.
Apparently the security guard first tried that stairway door. He could not get on floor. So he went down to 31 and rode elevator up to 32. But they also claim he found room door barricaded. Have not seen left ajar reported anywhere.