A frat house in Arizona got quite the gatecrashers the other day.

Popular pop duo The Chainsmokers dropped by. And not too long afterward, the cops showed up.

The Chainsmokers — which consists of Alex Pall and Drew Taggart — posted a video to Instagram on April 20 showing them having a great time during their surprise outdoor performance.

Parade adds that The Chainsmokers had already been in the area to headline the Breakaway Music Festival in Phoenix. This surprise frat show, however, was abruptly ended by the police around 45 seconds in.

”Listen up,” an officer can be seen saying on the video. “If you are under the age of 21, I’m going to tell you to leave right now. Or I’m gonna start writing tickets and start arresting folks.”

Uproxx reports that The Chainsmokers — not wanting to have only performed for a little under a minute — decided to pay a fine to finish their set. They played for another 15 minutes.

“I think I have quite literally been to that house,” reads one Instagram comment.

“Why didn’t y’all show up when I was [enrolled] at ASU,” bemoans another.

According to Entertainment Weekly , this 15-minute set involved the pair’s greatest hits — from “Roses” and “Closer” — as well as some new remixes, much to the delight of fans old and new.