Utah Senate candidate Mitt RomneyWillard (Mitt) Mitt RomneyRomney expresses opposition to Alabama abortion ban Romney: Trump 'has distanced himself from some of the best qualities of the human character' Mitt Romney: War with Iran is 'not going to happen' MORE said Wednesday that a series of suspicious packages sent to prominent Democratic officials were "sadly unsurprising" given the country's "rabid" political rhetoric.

"Disgusting, vile threats and actions against fellow Americans and our institutions are sadly unsurprising: hate acts follow hate speech," Romney tweeted.

"It is past time for us to turn down and tune out the rabid rhetoric," the 2012 GOP presidential candidate added.

The Secret Service intercepted packages earlier Wednesday addressed to former President Barack ObamaBarack Hussein ObamaPelosi receives John F. Kennedy Profile in Courage Award Romney: Trump 'has distanced himself from some of the best qualities of the human character' Biden calls for unity, jabs at Trump in campaign launch MORE and Bill and Hillary ClintonHillary Diane Rodham ClintonDe Blasio pitches himself as tough New Yorker who can take on 'Don the con' From dive bars to steakhouses: How Iowa caucus staffers blow off steam Warren policy ideas show signs of paying off MORE. A similar package arrived Wednesday morning at CNN's New York City offices addressed to former CIA Director John BrennanJohn Owen BrennanDems ask former CIA chief John Brennan for Iran briefing: report Brennan hits Trump for calling Mueller probe a 'coup': These are 'sociopathic ramblings' Brennan: Imagine if we had a president 'who did not have to obstruct justice' MORE.

Authorities have also intercepted packages addressed to Rep. Maxine WatersMaxine Moore WatersDemocrats are running out of stunts to pull from impeachment playbook Maxine Waters: Trump 'has done everything that one could even think of to be eligible for impeachment' Maxine Waters: Parts of Trump immigration plan are 'very racist' MORE (D-Calif.) and former Attorney General Eric HolderEric Himpton HolderEric Holder: 'There are grounds for impeachment' in Mueller report Prosecutor appointed by Barr poised to enter Washington firestorm Dems struggle to make Trump bend on probes MORE. The packages reportedly had Rep. Debbie Wasserman SchultzDeborah (Debbie) Wasserman SchultzCongressional Women's Softball team releases roster Overnight Defense — Presented by Huntington Ingalls Industries — Trump nominates Shanahan as Pentagon chief | House panel advances bill to block military funds for border wall | Trump defends Bolton despite differences House panel advances bill to block military construction funds for border wall MORE's (D) contact information listed for the return address. Wasserman Schultz said she is "deeply disturbed" that her name was attached.

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A similar device was discovered Monday at the home of billionaire philanthropist George Soros late Monday. Soros is an ardent supporter of liberal causes and Democratic politicians, and has been the subject of conspiracy theories pushed by far-right figures and some conservative politicians.

During his administration, President TrumpDonald John TrumpTrump: 'I will not let Iran have nuclear weapons' Rocket attack hits Baghdad's Green Zone amid escalating tensions: reports Buttigieg on Trump tweets: 'I don't care' MORE has explicitly criticized each of the individuals who were targeted by the suspicious packages. In remarks at the White House, the president called for unity and pledged a full investigation, but did not mention any of the people targeted by name.

"I just want to tell you that in these times, we have to unify," Trump said. "We have to come together and send one very clear, strong, unmistakable message that acts or threats of political violence of any kind have no place in the Untied States of America."

Numerous Republicans and Democrats condemned the acts and called for an easing of political hostilities.

Some lawmakers and Democratic leaders have pointed to Trump's attacks of Democrats at campaign rallies and elsewhere. He has labeled the Democratic Party an "angry mob," and attacked news outlets as the "enemy of the people."

Republicans have, in recent months, seized on protests from liberal activists, some of whom have confronted lawmakers in public, as a sign of deteriorating discourse.

Romney has periodically criticized Trump's rhetoric as he campaigns to replace retiring Sen. Orrin HatchOrrin Grant HatchTrump gambles in push for drug import proposal Biden's role in Anita Hill hearings defended by witness not allowed to testify 'Congress' worst tax idea ever'? Hardly. MORE (R-Utah). The former Massachusetts governor was once an ardent critic of Trump during the 2016 presidential campaign, calling him a "phony."

He has since said that he agrees with many of the president's policies, and will speak out on issues of "substantial significance."