Back to PROP, the Origami detective

One day one of her colleague Peter came in and said:

We have just caught a criminal and found a piece of paper on him.

There is some code on it but we can't figure out what that means.

We think it has something to do with a burglary.

Maybe it tells us what is stolen.

Do you have any idea?

He showed the paper. It contained lines and arrows. For the picture see here.

Prop looked at the paper and she smiled.

She took a sheet of Origami paper and ...

Well, how did she manage? Try and solve this puzzle.

Next month (maybe some later) I'll give my solution. And also give the next part of this story.