German officials had deemed the Tunisian man being sought in a manhunt across Europe a threat long before a truck plowed into a Christmas market in Berlin — and even kept him under covert surveillance for six months this year before halting the operation. The Tunisian terror suspect wanted in connection with the Berlin Christmas market atrocity spent four years in an Italian jail before moving to Germany, his father revealed . Anis Amri settled in Italy after leaving his hometown of Tataouine, Tunisia seven years ago to travel to Europe as an illegal immigrant, his father claimed in a radio interview.