Rome police say they have recovered more than 2,000 looted artifacts and 1,500 fragments worth over $4.6 million.

Police say the items include a fragment believed to belong to a fifth century B.C. wine cup by Greek artist Euphronius, which was returned by California's J. Paul Getty Museum in 1999.

The cup had been looted from an Etruscan site near Rome and now is on display in the capital.

Police said Friday the Roman and pre-Roman artifacts also include fragments of bowls, vases, statues and columns.

The items were recovered in three investigations earlier this year in private homes in and around Rome. Police are investigating 13 people. No arrests have been made.