(CNN) -- 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.
The first deputy on the scene pulled the victim's brother from the edge of the growing sinkhole, said Jessica Damico, a spokeswoman for the Hillsborough County Fire Rescue.
Authorities have not been able to contact the man as the sinkhole continued to expand. The house was deemed unsafe for rescuers to search for him, Damico said.
Late Thursday night, the hole was about 30 feet wide and 15 feet deep and still growing, authorities said.
Area homes have been evacuated.