A friend posted this on Facebook. Apparently this happened last night, October 26 on what looks like the blue metro (3). Watch it to the end. Here is a report, but only in Hungarian. From what I understand, this guys frequently does this.
Apparently they found the guy (that’s what it says on Facebook, but I can’t find evidence), but this is definitely making me think twice about all my belongings. The whole time I’ve been here, I’ve felt fairly safe in the city, but I guess you can never know.