ROME (Reuters) - A second letter bomb was discovered on Thursday at the Italian tax collection office where a similar device blew off part of the finger of the agency's director general last week, police said.
The latest bomb was intercepted before being delivered, and did not explode. An Italian anarchist group called the Informal Anarchist Federation claimed responsibility for last week's attack, and for a separate letter bomb sent to Josef Ackermann, chief executive of Deutsche Bank, two days earlier.
"The envelope aroused suspicion because black powder was leaking out of it," an Italian police spokesman said, concerning the latest incident.
"Bomb disposal experts tested the powder to see if it was explosive, and it was," he added.
A similar device blew off part of the finger of Marco Cuccagna, the director general of the agency, on Dec 9. The office, called Equitalia, collects overdue fines and taxes.
The same anarchist group claimed responsibility for two parcel bomb attacks against the Swiss and Chilean embassies in Italy just before Christmas last year, which injured two people. They also said they were behind a device that injured two people in the offices of a Swiss nuclear lobby group in March.
Prime Minister Mario Monti condemned the latest attempted attack as a "criminal act" against Italian institutions.
(Reporting By Daniele Mari, writing by Steve Scherer, editing by Michael Roddy)