From what I understand at least

Basically this chick went to Tate’s party, and she got a call from her boyfriend and she lied about wanting to be at the party, and said Andrew was holding her hostage. So the boyfriend calls the cops who call the US Embassy in Romania (where they are at) and they get Their address from the pizza order. They get arrested, and the cops don’t find anything illegal, and they check the cctv and see the girl going outside of the property to retrieve the pizza, proving that she wasn’t held hostage.

EDIT: This was a different story not the recent one.