Break-in or not?

OK, at 0854 I recieve a text message stating my door to my camper door was opened (smart sense open/close) and there was movement in the main space (smart sense pir). There was no movement at 0855. But the utilitech siren was still activated when I woked up at 1300.

The sheriff arrived at 1500 and said there was no visible sign of entry and my truck was backed up to the door and door was locked. All sensors read internal temp at 67.5 degrees with no errors or any other report.

Other than actual Breakin, how would the open /close and the pir sense something.

Setup: 1 hub, 2 smart sense pir’s, 1 smartsense open/close, 1 first alert smoke/co2, 1 ct30 thermostat, 2 Cree 60w bulbs.

Sounds like either st glitches and false alarm. Our someone opened the door and also cause the pir to activate and was spirited by the siren that is 2’from the door. What do you think???