Inbetweeners actress Emily Atack has been sent death threats by a Twitter user.
Atack, who played Charlotte Hinchcliffe in the E4 show, contacted the police after receiving a number of threatening tweets from a user calling themselves Jeff Jones.
A message from Twitter account @jeffjon56599388 said: "Emily its time 4 u to leave this world, ur last hours wnt be pleasant, it will acheive (sic) the objective."
Another said: "u sound happy!? im glad!!! visit yr family now ... tell them goodbye! it'll be yr last chance to do so!!!!!!"
The 22-year-old actress, who was born in Luton, contacted Bedfordshire Police and urged her followers to do the same.
From her account @EmAtack, she tweeted: "Everyone report @jeffjon56599388 https://twitter.com/jeffjon56599388@ never read/seen anything so vicious towards me in my whole life."
Atack, who has also appeared on ITV's Dancing On Ice, then replied to her abuser saying: "Prison for you."
She told her fans: "Hi all, thanks for your nice tweets! Police are on the case. X"
A police spokeswoman said: "I can confirm that we received a complaint reporting malicious communications and our investigations are ongoing."
Malcolm Browning, Atack's agent, said: "This has been a very upsetting and unsettling incident for Emily, but we are reassured that the police have responded so quickly and are taking this matter so seriously."
The Inbetweeners, which aired for three series from 2008 to 2010, spawned The Inbetweeners Movie in 2011 and a forthcoming spin-off series called Drifters.