The Prime Minister has rebuked Tory MP Michael Fabricant after he tweeted about punching a journalist.
Mr Fabricant tweeted about the Independent columnist Yasmin Alibhai-Brown after watching her during a TV debate yesterday, saying: "I could never appear on a discussion prog with @y_alibhai I would either end up with a brain haemorrhage or by punching her in the throat."
Speaking to LBC radio, David Cameron welcomed Mr Fabricant's subsequent apology, but said the original tweet was "not an acceptable thing to say".
"Michael knows that that is my view and I don't want to see this happen again," he added.
Yasmin Alibhai-Brown said she did not accept the "apology" issued by Tory MP Mike Fabricant, after he tweeted about punching her in the throat.
Writing on Twitter, she said his comments were a "violent urge" and "unacceptable".
A member of Parliament who tweeted that he would have to "punch" a woman in the mouth has reiterated his apology.
Mike Frabricant's original comments on the matter were criticised as being equivocal.
An MP has apologised after tweeting that he would "punch" a female journalist "in the throat".
In a series of tweets, the MP said he would never seriously threaten anyone with violence.
A Tory MP has appeared to tweet about physically assaulting a female journalist by punching her in the throat.
The Twitter account of Mike Fabricant, MP for Lichfield, made the comment in reference to a debate on last night's Channel 4 News on between journalists Yasmin Alibhai-Brown and Rod Liddle.
Labour's shadow minister for women immediately condemned the comments as "disgusting".
Young people should be aware that things they write on social networks now may stand in their way of their dream job in the future, the Conservative vice-chairman said.
Writing in The Telegraph, Michael Fabricant said that he had sent over 15,000 tweets in the past few months. He proposed that social media should be part of wider careers advice for young people.
Mr Fabricant added: "If the 15-year-old Michael Fabricant had had Twitter, I think it would be safe to say he would have struggled to find a job if future employers could trawl through thousands of tweets.
"My concern is that for many of our teenagers and young adults, today’s contemporary ‘banter’ and jokiness could become tomorrow’s block to their future job prospects".
Conservative MP Michael Fabricant said the Prime Minister's comments on a British-American tax and trade agenda could be the beginnings of a "most profound change":
The Tory MP Michael Fabricant has made light of fears surrounding fracking in the UK following today's announcement to allow the controversial practice go ahead:
Eight Conservative MPs have held preliminary talks about defecting to UKIP, the party's treasurer has claimed.
Stuart Wheeler has told The Daily Telegraph: “I have had lunch secretly if you like, in a completely confidential way, with eight different Tory MPs.”
Mr Wheeler, who was expelled from the Conservatives in 2009 after donating £100,000 to UKIP, has said he has passed their details onto the party's leader Nigel Farage.