Powdery substance, threatening note delivered to school

Authorities in Lake County say an envelope containing a threatening message and powder was delivered to Groveland Elementary School on Thursday.

The Groveland Police Department; fire departments from Groveland, Minneola and Lake County, and the Lake County hazmat team responded. The immediate area was quarantined, and three Groveland police officers and three school employees were detained until the substance could be tested.

Preliminary tests came back negative for any biological threat, Groveland Police Chief Shawn Ramsey said.  The envelope and substance will be forwarded to federal authorities who will take over the investigation, a school spokesperson said.