On 20 August, Arjen Kamphuis, a leading Dutch cybersecurity expert, checked out of his hotel in Bodø, northern Norway. He had told friends that he planned to take the train to Trondheim, 10 hours away.
He never boarded the train. Nor, two days later at the supposed end of his holiday, did he catch his return flight to Amsterdam. An intensive search by Norwegian police, and two Dutch investigators dispatched to help them has failed to locate him.
A kayak believed to belong to Kamphuis, who advised governments, corporations, journalists and activists on information security, was pulled from the sea about 50km from Bodø on Thursday, police said, the day after an amateur fisherman found some of his belongings – reportedly including an ID card – floating in the water.
But mobile phone records show that 10 days after the Dutchman was seen leaving his hotel, both his work and personal mobile phones were briefly switched on – with German SIM cards inserted – more than 1,700km from the small northern town, at Vikeså near Stavanger.