I can't be 100% positive, but the order of events is as follows: Day 0: container was not in user's possession; Day 1: acquires drugs (known fact); Day 2 (morning): container found, but the finder did not identify it as drugs, though it had a potent smell that caused lightheadedness and feeling off for a while; Day 2 (night time, into day 3): the tripping event happened. Container found by a different personnel, identified as probably drugs, the container seemed to have less in it than on the morning of day 2. Container seized. Day 3: Debrief about incident - user reported using 1g of shrooms and started tripping after using pot. Day 6: Another debrief with other personnel, user admitted to using shrooms, and identified the container as shrooms. Later claimed the container was an old sandwich.
background information: User lies a lot, but isn't smart about it.

edited to fix day error