Police were initially investigating a bomb threat, but the Miami-Dade Fire Rescue department later confirmed that the reports were due to an active shooter at the hospital.



"We are working closely with local police as they investigate a threat made to the hospital. Together with law enforcement, we are taking measures to safeguard children, families and our staff in light of this situation," the Nicklaus Children's Hospital said in a statement on Twitter. At 4 p.m., portions of the hospital were under lockdown, CBS Miami reported.