A man has been arrested on suspicion of making threats to kill in an email sent to Labour leadership candidate Angela Eagle.
The 44-year-old suspect was arrested in Paisley, Scotland, on Friday morning, and is being questioned by Merseyside police.
The arrest follows a threatening email sent to Eagle, the MP for Wallasey near Liverpool.
A police spokesperson said: “A 44-year-old man has been arrested on suspicion of making threats to kill. Officers from Merseyside police executed a warrant in Paisley, Scotland, this morning, Friday July 15, and arrested the man.
"He will be questioned by Merseyside detectives today. The arrest comes after an email was sent to the account of Wallasey MP Angela Eagle.”
In a separate incident, Eagle, who is challenging Labour leader Jeremy Corbyn's position, had a brick thrown through the window of her constituency office, which is also being investigated.
Eagle is among a number of Labour MPs, including Luciana Berger and Chris Bryant, who have received death threats over the past few weeks.