A firefighter searches for survivors in a building that collapsed in downtown Rio de Janeiro, Brazil, Wednesday, Jan. 25, 2012. (AP Photo/Victor R. Caivano)
Rescue workers carry an injured victim after a building collapsed in Rio de Janeiro, Brazil, Wednesday Jan. 25, 2012. A multistory building in Rio de Janeiro collapsed after a possible natural gas explosion. There is no official word on deaths, but Globo television cites unidentified Brazilian authorities as saying two bodies have been found so far. (AP Photo/Felipe Dana) (AP2012)
Rescue workers search for victims after a building collapsed in Rio de Janeiro, Brazil, Wednesday Jan. 25, 2012. There is no official word on deaths, but Globo television cites unidentified Brazilian authorities as saying two bodies have been found so far. (AP Photo/Felipe Dana)
Firefighters search for survivors in a building that collapsed next to the Municipal Theater, right, in downtown Rio de Janeiro, Brazil, Wednesday, Jan. 25, 2012. (AP Photo/Victor R. Caivano)
Firefighters search for survivors in a building that collapsed next to the Municipal Theater, right, in downtown Rio de Janeiro, Brazil, Wednesday, Jan. 25, 2012. (AP Photo/Victor R. Caivano)
Firefighters search for survivors in a building that collapsed in downtown Rio de Janeiro, Brazil, Wednesday, Jan. 25, 2012. (AP Photo/Victor R. Caivano)
Rescue workers load an injured victim into an ambulance after a building collapsed in Rio de Janeiro, Brazil, Wednesday Jan. 25, 2012. A multistory building in Rio de Janeiro collapsed after a possible natural gas explosion. There is no official word on deaths, but Globo television cites unidentified Brazilian authorities as saying two bodies have been found so far. (AP Photo/Felipe Dana)
Rescue worker remove a car after a building collapsed in Rio de Janeiro, Brazil, Wednesday Jan. 25, 2012. There is no official word on deaths, but Globo television cites unidentified Brazilian authorities as saying two bodies have been found so far. (AP Photo/Felipe Dana)
Rescue workers carry an injured victim after a building collapsed in Rio de Janeiro, Brazil, Wednesday Jan. 25, 2012. A multistory building in Rio de Janeiro collapsed after a possible natural gas explosion. There is no official word on deaths, but Globo television cites unidentified Brazilian authorities as saying two bodies have been found so far. (AP Photo/Felipe Dana) (AP2012)
Rescue workers search for victims after a building collapsed in Rio de Janeiro, Brazil, Wednesday Jan. 25, 2012. There is no official word on deaths, but Globo television cites unidentified Brazilian authorities as saying two bodies have been found so far. (AP Photo/Felipe Dana)
Rescue workers search for victims after a building collapsed in Rio de Janeiro, Brazil, Wednesday Jan. 25, 2012. There is no official word on deaths, but Globo television cites unidentified Brazilian authorities as saying two bodies have been found so far. (AP Photo/Felipe Dana)
Rescue workers carry an injured victim after a collapsed building in Rio de Janeiro, Brazil, Wednesday Jan. 25, 2012. A multistory building in Rio de Janeiro collapsed after a possible natural gas explosion. There is no official word on deaths, but Globo television cites unidentified Brazilian authorities as saying two bodies have been found so far. (AP Photo/Felipe Dana) (AP2012)