FORT LAUDERDALE (CBSMiami) – The Broward School Board building has been given the all clear after someone opened mail containing a mysterious white powder on Monday.READ MORE: 2 Doral Police Officers Injured In Shooting Near Miami-Dade Police Headquarters; Suspect Killed ID'd By Police
Fort Lauderdale Fire Rescue and hazmat crews were called in investigate the substance.READ MORE: Shot Doral Police Officer In Serious But Stable Condition, Second Officer Recovering
Chopper4 was over the scene at 600 SE 3rd Ave. as two hazmat crews entered the building.
The 10th floor of the building had been quarantined as they investigated.MORE NEWS: South Florida PBA Union President Steadman Stahl On Stress Of Being A Police Officer
Crews have not said what the powder was, but they have given the all clear.