Lisa Borch, aged 15 at the time of the murder, was sentenced to nine years behind bars after and she and her boyfriend Bakhtiar Mohammed Abdulla, 29, stabbed her mother Tina Römer Holtegaard at least 20 times.

The attack, at her family home in Kvissel, northern Denmark, in October 2014, came after Borch, now 16, had watched the killings of British hostages Alan Henning and David Haines online.

During the first trial in September, the court was told how Borch had become obsessed with radical Islam and ISIS.

Read the article “Blonde Teen Radicalized by ISIS Videos Jailed for Nine Years after Stabbing Mom to Death” on express.co.uk.