The headquarters of Banca Monte dei Paschi di Siena SpA, the oldest surviving bank in the world and Italy's third-largest bank.

Italy's Treasury has not ruled out extending repayment deadlines on hundreds of millions of euros in state aid to help troubled lender Banca Monte dei Paschi di Siena as it struggles to raise fresh capital, a person close to the matter said on Tuesday.

Officials, who declined to be cited by name, said Monte dei Paschi Chairman Alessandro Profumo and Chief Executive Fabrizio Viola had held meetings in the Economy Ministry on Monday to seek options for the bank, after it failed European Central Bank stress tests.