The internet troll who made antisemitic death threats against Luciana Berger has pleaded guilty to three further charges.

John Nimmo, from South Shields, had admitted sending two emails to Britain’s youngest Jewish MP saying she would “get it like Jo Cox” and warning her “watch your back Jewish scum”.

The second message to Labour MP Ms Berger included a picture of a large knife and came only weeks after MP Jo Cox was murdered.

Appearing at Newcastle Crown Court, he admitted three further offences relating to tweets sent to an unnamed person which read: "watch your back you Jewish inbred, you’re dead meat, National Action.”

Nimmo, 28, who was jailed for eight weeks in 2014 for sending abusive messages to Labour MP Stella Creasy and feminist campaigner Caroline Criado-Perez, has been remanded in custody until February 10 when he will be sentenced.

In a separate incident he admitted sending emails to an anti-hate group in which he threatened to blow up a mosque.

Ms Berger, the former shadow minister for mental health, said the messages had caused her “great fear and anguish”.

She said the tweets had left her in a state of “huge distress” and “it caused me to feel physically sick being threatened in such a way”.

“I was extremely concerned for my safety and I felt completely under threat. I had previously received anti-Semitic messages and threats but the reference to Jo Cox was terrifying,” she said.

“The biggest concern was not knowing who this was, for all I knew the offender could have resided next door to me.”