Bankman-Fried's net worth rose to $26 billion, two years after launching a hedge fund that let users buy and sell digital assets such as bitcoin
"We know that at least 30 people have died as a result of this fire," said Commander Stuart Cundy, adding that the figure was expected to rise.
He added that 24 people were still in hospital and 12 were receiving critical care.
"The investigation will look in into what criminal offences may have been committed," Cundy said.