(CNN) President Donald Trump addressed on Wednesday suspicious packages sent to former President Barack Obama, 2016 Democratic presidential nominee Hillary Clinton and other individuals as well as CNN, saying the country's leaders must "come together" to speak out against threats of political violence.

"I just want to tell you that in these times, we have to unify," Trump said at an unrelated opioid bill signing event at the White House. "We have to come together and send one very clear, strong, unmistakable message that threats or acts of political violence have no place in the United States of America."

"It's a very bipartisan statement," he added. "This egregious conduct is abhorrent to everything we hold dear and sacred as Americans."

Earlier Wednesday, authorities have intercepted suspicious devices intended for Obama and Clinton, and the Florida office of Democratic Rep. Debbie Wasserman Schultz was evacuated Wednesday after a suspicious package was mailed there.

Also, CNN's New York bureau in the Time Warner Center was evacuated after a package with an explosive device, addressed to former CIA Director John Brennan, was discovered, city and local law enforcement officials said.

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