The man, who is 33 and lives in Italy, was taken off the train late yesterday and placed in custody after customs officials who had boarded the train at the French city of Dijon confiscated a plastic bottle wrapped in aluminium foil.
After tests were carried out by a mobile laboratory at a border customs post at Vallorbe in Switzerland, an investigation for "transport and possession of explosive products" has been opened, Saffar told AFP.
"The product contained in the bottle had some positive reactions to tests on explosive substances," Saffar said, but cautioned that "these tests are simply an indication, we need more precise analysis to determine exactly what it is."
