A man has been arrested following investigations into an allegedly threatening Twitter post that called for people to "Jo Cox" an MP.
Anna Soubry, the MP for Broxtowe in Nottinghamshire, was the apparent target of an online message which read: "someone jo cox Anna sourby please."
The politician responded to the message on social media, calling the Twitter user a "sad cowardly troll" and noting the incorrectly spelled surname.
Nottinghamshire Police later confirmed they were investigating the incident.
On Saturday the Metropolitan Police said a 25-year-old man was arrested at his home in Bethnal Green on "suspicion of sending malicious communications".
A spokesman said the man was in custody in an east London police station. He has not been charged.
It comes after Jo Cox's murderer Thomas Mair was jailed for life for shooting and stabbing the Labour MP for Batley and Spen outside her constituency office in Birstall, West Yorkshire, in June.
Conservative MP Soubry was a Remain supporter in the EU referendum, as was Cox.