ROME (AFP) - A letter bomb sent to a Rome tax collection office was intercepted on Thursday, a week after a first bomb exploded, nearly blinding the director who opened it, Italian media reported. "Bomb disposal experts were called in this morning after a suspect package was reported at the Equitalia office," a police spokesman told AFP. The experts were still examining the package and had found "dark powder inside," he said. He confirmed that "the powder tested positive" as an explosive. An Italian far-left group claimed responsibility for the letter bomb last week that wounded the tax collection company's director, following a first foiled attack on the head of Deutsche Bank.