Judicial sources told the Italian news agency ANSA prosecutors believe the attack on Roberto Adinolfi of the company Ansaldo Nucleare may have been by a group of anarchist extremists, partly because of the type of gun used, a semi-automatic.
Adinolfi, 53, apparently was shot by a man on a motorbike who fired three times and he was hit once.
Adinolfi had surgery for a leg wound at San Martino hospital in Genoa and his condition was reported not to be serious.
Ansaldo Nucleare is a subsidiary of the Ansaldo Energia group, which is owned by Italian defense company Finmeccanica. Ansaldo Nucleare, which has about 170 employees, works in development and decommissioning of nuclear plants and reactors as well as waste management.
ANSA said anarchist groups are suspected in several attacks in Italy and other countries in Europe.