THE TRAGIC ACCIDENT
Tragedy hit hard in the Dominican Republic when a nightclub roof came crashing down on partygoers -- leaving 18 dead and more than 120 injured in the chaos.
The terrifying moment was caught on camera -- one minute, fans were vibing to merengue star Rubby Pérez onstage at the popular Jet Set nightclub in Santo Domingo ... the next, the roof dramatically collapsed, plunging the place into darkness and panic.

Pérez was pulled from the rubble, and his manager, Enrique Paulino -- who reportedly had blood on his chest -- said it all happened so fast, he thought it was an earthquake .