Yeah, similar thing happened to me a few months ago too.
I went out to the car to grab something at like 9pm but forgot to arm it. Then I went back out to the car at 11pm, with papers and stuff everywhere.
They went through my glove box and centre console, ALL they took was my $50 walkie talkie lol.
I had my GPS on the floor and my iPod in my din, but I guess it was too dark and they wouldn't see it? lol
I was lucky though, because if it was someone that knows what they are doing, they coulda taken like 3k worth of stuff lol