. >> reporter: dan mockbee says back at home, he started hearing about an incident at the warehouse.they weren't letting people into the building. they were turning them away. >> reporter: dan says he tried calling his wife and other co-workers, but no one was picking up. >> and that's when i started getting nervous. >> reporter: he drove over and was escorted inside by detective stahl. >> everett stahl sat me down at a table and started to ask me a few questions. and i looked at him and i said "excuse me, officer. my wife works here. i really need to know that she's all right." and that's when he told me that she was deceased. >> his reaction was pretty excruciating to watch. i still had to press on, and i still had to move forward with my looking at him as a possible suspect. >> reporter: while dan mockbee was being questioned, michelle's family was starting to get word from the scene. >> i think i threw the phone down. and i'm just like no, no, this isn't happening. this isn't real. >> reporter: by dusk, the lockdown at the warehouse was lifted. >> i had each person walk through t