Investigators say the Learjet 60 may have broken up before impact, killing nine people [SOUND]

# The US National Transportation Safety Board says it has found initial evidence suggesting the aircraft that crashed in Florida could have begun breaking up in mid-air before nose-diving and exploding. Nine people on board the Learjet 60, which was travelling from Austin, Texas, to the Bahamas, died in Sunday’s crash. A tech entrepreneur and his young family, as well as the 20-year-old copilot, were among those who died. NTSB member Tom Chapman says weather conditions could have also played a part in the crash: