The owner of a well-known area restaurant has admitted filing false tax returns after hiding more than $350,000 in business proceeds in her personal banking account. Maria Pinheiro, 57, owner and operator of Dolphin\u2019s Cove Marina in Bridgeport, waived her right to indictment and pleaded guilty to one count of filing a false tax return in Bridgeport federal court on March 26. Dolphin\u2019s Cove is a seafood restaurant on Seaview Avenue in Bridgeport, occupying a waterfront location in that city\u2019s East End. Funds in personal checking account According to court documents and statements made in court, Pinheiro was the sole shareholder and bookkeeper for Dolphin\u2019s Cove Marina from 2007 to 2009, handling all of the restaurant\u2019s finances. Pinheiro admitted that instead of depositing all of the cash receipts from Dolphin\u2019s Cove into the Dolphin\u2019s Cove business checking account, she deposited substantial amounts of cash from the business into her personal checking account, according to prosecutors. She then failed to provide her personal bank records to the firms that prepared the federal income tax returns for her and Dolphin\u2019s Cove, prosecutors said. Kept deposits under $10,000 From 2007 to 2009, Pinheiro deposited $352,437 in cash that Dolphin\u2019s Cove received into her personal bank account, according to court documents. Some deposits were structured in amounts of less than $10,001 in order to evade her bank\u2019s currency transaction reporting requirements, prosecutors said. Pinheiro\u2019s actions caused the filing of false personal and corporate tax returns, resulting in a tax loss of $92,251, federal officials said. Could serve three years in jail Pinheiro, a Trumbull resident, faces a maximum of three years in prison and $100,000 fine when she is sentenced on June 15. She also has agreed to pay $243,957 in back taxes, interest and penalties. The case was investigated by the Internal Revenue Service\u2019s Criminal Investigation Division, and is being prosecuted by Asst. U.S. Attorney Sarah P. Karwan from the U.S. Attorney\u2019s Office for Connecticut.