A Swiss man living in Morocco was arrested in Marrakesh on Saturday, for alleged links to suspects in the recent murder of two female Scandinavian hikers, authorities said.
The man is "suspected of teaching some of those arrested in this case about communication tools involving new technology and of training them in marksmanship", Morocco's central office for judicial investigations said in a statement.
It said he subscribed to "extremist ideology" and also had Spanish citizenship.