What Happened First?

The case file

Someone broke into the warehouse last night. The logs below are all verified -- the order has to be reconstructed. What happened first?

The rule: Every finding below comes from a verified log. Reconstruct the order of events.

The clues

1. The door sensor log shows the rear door sensor tripping at 1:11 AM, after the hallway camera flagging motion.
2. The keycard log shows the keycard reader logging an entry at 1:13 AM, after the rear door sensor tripping.
3. The phone log shows the 911 call being placed at 2:02 AM, after the keycard reader logging an entry.
4. The sensor log shows the storage-room motion sensor firing at 1:16 AM, after the keycard reader logging an entry.

Who did it?

1. the storage-room motion sensor firing
2. the rear door sensor tripping
3. the hallway camera flagging motion
4. the keycard reader logging an entry

The verdict is still sealed. The answer is revealed here tomorrow — or play today's case and render your own verdict now.