[Posted at 6:12 a.m. ET] Police now say that the 36-year-old man who disappeared when a sinkhole opened up underneath his Brandon, Florida, bedroom early Friday is presumed dead.

It's not confirmed, but I think it's safe to presume," Hillsborough County fire department spokeswoman Jessica Damico said Friday morning.

[Posted at 2:11 a.m. ET] A 36-year-old man disappeared Thursday night after a sinkhole opened up underneath his bedroom in Florida, authorities said.

Right after the ground started to give way in his home in Brandon, the man's brother frantically tried to keep him from sinking into the hole, an emergency official said.