The white powder included in the suspicious packages sent to a number of Democratic leaders over the past few days in a number of locations — and intercepted by authorities before any harm could be done — is said not to present any “biological” threat.

That’s according to the New York City Police Department and other authorities and experts working around-the-clock to figure out the source and motive of the deliveries intended for a variety of people.

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Aside from that, there was precious little news to report to the public as of yet during a press conference held in New York City on Thursday afternoon, though authorities, including New York City Police Commissioner James O’Neill (shown above), stressed the urge for continued caution while characterizing the sending of the packages as an act of terrorism.

The FBI’s counterterrorism group is leading the investigation into the suspicious packages — and has classified the actions as a domestic terror matter. That classification is based on the current lack of other information and could change over time, as CNN and others have noted.

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The Secret Service, the United States Postal Inspectors, and the Bureau of Alcohol, Tobacco and Firearms (ATF) are also working on the investigation in unison with various state and federal offices.

Two packages containing crude explosive devices and addressed to the home of former Vice President Joe Biden were found on a Delaware street near a Wilmington post office and in New Castle late Wednesday, as LifeZette noted earlier on Thursday.

The packages to Biden brought to 10 the current total of apparently similar devices sent to prominent Democrats and other left-wing figures.

The earlier packages were addressed to former President Barack Obama, former President Bill Clinton and former first lady Hillary Clinton, former Attorney General Eric Holder, far-left Democrat funder George Soros, Rep. Maxine Waters (D-Calif.), actor Robert De Niro and others.

Similar packages were also mailed to the New York bureau of CNN — intended for former CIA Director James Brennan, apparently — as well as to the Florida congressional office of Rep. Debbie Wasserman Schultz (D-Fla.).

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President Donald Trump said Wednesday during a press conference that “the full weight and resources” of the federal government are being devoted to identifying the person or persons responsible for what the chief executive described as “despicable acts.”

During the Thursday news conference, Commissioner O’Neill urged continued vigilance among the public.

“New Yorkers are safe,” he said in part. “There are no current credible threats to any individuals, organizations, or locations.”

But he prudently stressed the need for ongoing vigilance.

See the tweets below with more information on the Thursday press conference — then check out the video right underneath.

Watch this video: