During the Yonex Sunrise Vietnam GP Open badminton tournament in Ho Chi Minh City at the Phan Dinh Phung Sports Centre on Tuesday, an eagle-eyed referee noticed something a little out of the ordinary.

When he looked up, he noticed cracks forming in the ceiling. He was able to alert everyone and get them off of the court, just seconds before THE ROOF CAVED IN!

Incredibly, no one was injured in the collapse, despite many fans being in the stands, according to Yahoo! Sport UK/Ireland.

Check out the crazy video below!