Police will not take any action against Nigel Farage after he vowed to "take the knife to the pen pushers in Whitehall" at a Brexit Party rally.
The politician sparked anger when he made the comment to a 500-strong crowd last week.
He told the audience: "Once Brexit is done, we will take the knife to the pen pushers in Whitehall."
Alliance Party MEP Naomi Long asked police on Twitter if they would be investigating "this clear case of incitement to violence against staff in the civil service".
Gwent Police replied, saying: "We have been made aware of comments made last night in Newport and we are looking into these allegations."
But the force later confirmed no criminal offence had been committed.
In a statement police said: "We are aware of the heightened tensions that exist regarding use of language, and take all allegations and concerns from members of the public very seriously.
"However, following a thorough assessment, it is our view that the comments in the video, do not constitute a criminal offence. As such, Gwent Police will not be taking any further action."
Since news of the police investigation became public, Farage has addressed the controversy by tweeting: "I should have said 'take the axe', which is a more traditional term for cuts."
The rally is part of a nationwide conference tour in which Nigel Farage will address audiences around the country.
The comments come amid growing concern about the language used by politicians in the Brexit debate.
Yesterday, former Home Secretary Amber Rudd accused Boris Johnson of "inciting violence" for using words like "Surrender Act", "traitor" and accusing MPs of "betraying" the people.
Johnson was also under fire this week after he rubbished concerns raised by Labour MP Paula Sherriff about his "inflammatory" language.
Sheriff told the Commons she receives death threats every day, and warned Johnson that many threats "quote his words". However, the prime minister replied he had "never heard such humbug in all my life."
He has also refused to apologise for saying that delivering Brexit was the best way to "honour the memory" of murdered MP Jo Cox.
