Louisa Jespersen, was 24 and from Denmark, and 28-year-old Norwegian Maren Ueland had been studying at the University of Southeastern Norway. They were on a month-long holiday in Morocco since the 9th of December. They travelled to Mount Toubkal, North Africa's highest peak, near the tourist village of Imlil, south of Marrakesh. Ms Ueland's mother said the women had taken full precautions ahead of their trip.
A video showing the beheading of one of the women was shared on social media by supporters of Islamic State. In the video, the killer says: "This is in revenge for our brothers in Hajin," . Moroccan authorities have said that the four men in detention are the same men who appeared in the second video.