Caught on cam: Parking garage collapses without warning

FORT LAUDERDALE, Florida -- Construction crews were working on the demolition of an old courthouse in Fort Lauderdale, Florida this week when the neighboring parking garage fell.  

A cloud of dust shot out as the four-story building went down.  

No one was seriously hurt.  

The garage was slated to be torn down too -- but not for a few weeks.  

Investigators are working to figure out why the structure fell.