A Labour MP has reported a Twitter user to police after receiving an alleged death threat for supporting bombing in Syria.
Neil Coyle, MP for Bermondsey and Old Southwark, received a tweet which said "u voted for airstrikes in syria, if i see u round ends" alongside images of knives.
It came as police confirmed they were looking into a number of threats made against MPs who backed the bombing campaign.
A Scotland Yard spokesman said: "Police are aware of a number of threats made on social media relating to Members of Parliament.
"An assessment of these threats is ongoing."
Labour's most senior figures, leader Jeremy Corbyn and his deputy Tom Watson, have reiterated in an email to members that "abuse and intimidation" were unacceptable after a series of MPs who voted for military action were subjected to abuse from activists.
There was no indication that the Twitter user who sent the message to Mr Coyle was a Labour member.
Mr Coyle told MailOnline: "I've gone to the police over this threat. I'm no traitor - I voted with my conscience just like Jeremy."
There were calls in the Commons for MPs' security to be reviewed following a campaign by anti-war protesters bombarding MPs with images of dead babies and severed heads.
Shadow Commons leader Chris Bryant highlighted the issue of abuse targeted at MPs planning to support bombing of Islamic State in Syria.
Commons leader Chris Grayling said security was a "continuing priority" adding MPs must be allowed to express views in a "free and unfettered" way.
Additional reporting by the Press Association.
