The communications chief of Italy's scandal-hit Banca Monte dei Paschi di Siena (BMPS) killed himself Thursday by jumping out a window at the bank's headquarters, Italian media said.
Investigators had searched David Rossi's home and office 10 days ago in connection with a probe into hundreds of millions of euros missing from the accounts of BMPS, the world's oldest bank.
But no charges had been brought against him.
Rossi leapt from a window of the 14th-century Rocca Salimbeni palazzo in Siena, where the bank is headquartered, reports said.
Rescuers were unable to save him.
Prosecutors launched legal proceedings after media revealed that BMPS had lost some 700 million euros ($900 million) following risky investments in complex financial products.