Italian Fabrizia Di Lorenzo confirmed dead in Berlin terror attack.

Rome security chiefs have increased the capital's security arrangements following the terror attack in Berlin in which at least 12 people were killed – including Italian Fabrizia Di Lorenzo – when a lorry ploughed into a Christmas market on 20 December.

Italian president Sergio Mattarella and premier Paolo Gentiloni have led tributes to Di Lorenzo, whose death was confimed on the morning of 22 December. Germany has offered a €100,000 reward for information leading to the arrest of the prime terror suspect Anis Amri, a Tunisian man who may have been radicalised during a four-year jail term in Sicily. Amri was imprisoned for his part in a riot and an arson attack on a temporary migrant centre on the Italian island of Lampedusa, in 2011, where he landed the same year with no identification papers.

In the wake of the Berlin attack, Rome will resume the same level of security as during the Vatican's Holy Jubilee Year of Mercy, which ended on 20 November.

Extra attention will be paid to shopping malls and Christmas markets, particularly on New Year's Eve and New Year's Day, while traffic police will carry out increased checks on articulated lorries entering the city centre.

The use of fireworks, rockets and any explosive material has also been banned in Rome from 29 December until midnight on 1 January. Those caught violating the ban face fines of up to €500.