The Tunisian man suspected of carrying out the Berlin Christmas market truck attack moved like a "lone wolf" while travelling through Italy, the country's interior minister said.
Marco Minniti's remarks bolstered Italian investigators' findings which have indicated that 24-year-old Anis Amri lacked any significant contacts in Italy as he fled Germany in the wake of the December 19 attack, which killed 12 people.
Mr Minniti said "from when he arrived in Italy, Amri moved like a lone wolf" while he was a fugitive.
Amri spent three and a half years in prisons in Sicily before ending up in Germany after Italy tried unsuccessfully to expel him to Tunisia following his release from prison.
Amri died in a shoot-out with Italian police on December 23 outside a suburban Milan train station.