The explosive devices sent to President Donald Trump's political opponents appear to have been "similar" pipe bombs and might have been sent from the same source, according to John Miller, the New York City deputy commissioner of intelligence and counterterrorism.
"It appears that an individual or individuals sent out multiple similar packages," Miller said, adding the devices appeared to be pipe bombs in packages that also contained white powder that has yet to be identified.
Miller said New York City police officers happened to be in the CNN building instructing employees on how to identify potential explosive devices when the package was discovered in the mailroom.
He said the New York Police Department has sent information to 20,000 private "security partners" in office and apartment buildings, with tips on how to identify and handle suspicious packages.
Police removed the device from the CNN office and loaded it into a bomb truck. Then they transported it to a detonation range, inspected it, and are now preparing to send it to an FBI laboratory in Washington.
The devices were stopped by police and Secret Service after being sent to former President Barack Obama, former Democratic presidential candidate Hillary Clinton, the CNN bureau in New York, and New York Governor Andrew Cuomo's office in Manhattan, according to reports.
Cuomo's device "has been identified and is being handled as we speak," the governor told reporters.
"We wouldn't be surprised'" if more devices show up, Cuomo said.
New York City Police Commissioner James O'Neill said police recovered a device that appeared to be a live explosive at the CNN office in the city and an envelope containing white powder.
"This was clearly an act of terror attempting to undermine the free press and leaders of this country through acts of violence," New York Mayor Bill De Blasio told reporters. "We've seen worse. And we will not be intimidated."