UPDATE: 3 Bodies Found In Rio Buildings Collapse

RIO DE JANEIRO (AP) - Brazilian officials say three bodies have been recovered following the collapse of several buildings in the historic center of Rio de Janeiro.

Fire Department spokesman Moises Torres says crews are searching for another 21 people reported missing. He says at least six others

were wounded and treated.

It's not clear what caused the accident. But officials have said they think it was a structural problem. One building about 20-storys high fell and caused two smaller buildings near it to also go down.

Firefighters and other rescuers are using dogs Thursday to search for any possible survivors.