ROME — Bomb squad experts today defused a package bomb that was delivered to the Greek Embassy in Rome, four days after similar mail bombs exploded at two other embassies, wounding two people.

Carabinieri Col. Maurizio Mezzavilla said the bomb was similar to the ones that exploded Thursday at the Chilean and Swiss embassies. An anarchist group with reported ties to Greek anarchists claimed responsibility for those blasts.

“Having been done in the same way, we can just hypothesize that there is the same hand behind it,” Greek Ambassador Michalis Kambanis said at the embassy, although he added that he knew of no specific claim of responsibility.

Greek Foreign Ministry spokesman Gregoris Delavekouras said from Athens that no one was harmed in the latest incident, in part because heightened security measures had already been put in place.

Ambassador Kambanis said the package, hand addressed to the embassy, was discovered at about 10:30 a.m.