Swiss trained murderers of Louisa and Maren

Morocco arrested a Swiss man on Saturday in Marrakech on suspicion of involvement in the deaths of two Scandinavian female tourists.

Nineteen others have already been arrested in connection with the killings in the Atlas Mountains. Four main suspects swore allegiance to the Islamic State terror network in a video. The video was made three days before the killings. The authorities described the suspects as 'lone wolves' before.