A day after two of the nation's largest school systems received email threats against students and property, Miami-Dade and Broward schools received a similar threat.
In South Florida, the news had many worried parents expressing fear and keeping their kids home from school.
The emails to New York and Los Angeles were deemed not credible, although the Los Angeles superintendent chose to shut down a school system with more than 600,000 students for the day.
In Miami-Dade, school police deemed Wednesday night’s threat “less than credible” in an email alert to parents and students.
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Miami-Dade, Broward and Houston — which received the same threat — are open Thursday.
The local school districts contacted federal, state and local authorities and are deploying additional security to campuses on Thursday.
“Parents are encouraged to send their children to their regularly scheduled classes,” Miami-Dade schools said in a statement.
All principals have been alerted, school personnel arrived early Thursday to sweep through campuses and police have closed off some areas as a precaution, said Daisy Gonzalez-Diego, a spokesman for the school district.
“Everybody is being vigilant,” she said.
Some parents, responding to a Miami Herald post on Facebook, said they are keeping their children home Thursday.
The Broward school district also received an email threat. “All Broward County Public Schools will be open today, Thursday, 12/17, as usual, following a less-than-credible threat,” the district said in a statement.
On Tuesday, L.A. closed all of its schools after receiving an email threat. New York City received a threat as well, but kept its school campuses open.
“Awareness, preparedness, vigilance, communication, but not fear, must continue to be the appropriate actions to less than credible threats,” Miami-Dade Superintendent Alberto Carvalho tweeted Thursday morning.