ROME (AP) — An independent researcher claimed on Wednesday that a marble bust of Christ in a Roman church is by Michelangelo, the latest purported attribution to the Renaissance genius who is one of the most imitated artists in the world.The unverified claim by Valentina Salerno has unsettled Renaissance scholars, especially since a recent sketch of a foot that was attributed to Michelangelo — but disputed by some as a copy — recently fetched $27.2 million at a Christie’s auction.Given the stakes — and Salerno’s suggestion that several other works can now be attributed to Michelangelo based on her documentary research — leading experts have declined to comment.AdvertisementAdvertisementSalerno has published her theory on the commercial website academia.edu, a non-peer reviewed social networking site academics use, and announced the first “rediscovery” at a press conference Wednesday.The claims have drawn perhaps more attention than they normally would, given the Vatican seemed at least initially interested. Friday marks the 550th anniversary of Michelangelo’s birth and there are a number of exhibits, conferences and commemorations that are reviving attention about his genius and legacy.The culture ministry was invited to participate in Salerno’s press conference and didn’t, said the abate of the order that runs the church, the Rev. Franco Bergamin, while the Carabinieri’s art squad refused to weigh in on the authenticity of the statue, but said it was being protected and a laminated sign now graces the sculpture: “Alarm armed” it reads.“We hope that this asset, which belongs to our cultural heritage regardless of whether it can be attributed to Michelangelo Buonarroti or not, is part of the national heritage that we are responsible for defending,” said Lt. Col. Paolo Salvatori.’Documentary evidence on this’Michelangelo Buonarroti, who lived from 1475-1564, created some of the most spectacular works of the Renaissance: the imposing statues of David in Florence and Pieta in St. Peter’s Basilica, the Sistine Chapel ceiling and “The Last Judgment” fresco behind the chapel’s altar. Salerno now says she has located another — a bust of Christ in the Basilica of Sant’Agnese fuori le mura, listed by Italy’s culture ministry as anonymous from the Roman school of the 16th century.AdvertisementAdvertisementShe is not the first to claim it. In 1996, Michelangelo …